Thanks for the advice, all. I first tried putting 2mm spacers under the tensioner lugs and running it. It made absolutely no diference to the sound. So I bit the bullet and took off all the bits to get at the cam belt. I mus say it was a lot easier than doing the Corolla due to the extra diatance between the engine and the body, with the exception of the power steering pump return hose, which I eventually disconnected and wired out of the way. Lots of fluid remained in the reservoir, however, and made a big mess. And taking the crankshaft nut off was a snack after I spent half a day constructing a tool to hold the pulley, and a 70cm extension to my socket, from a 45 mm thick wall tube to allow me to use the breaker bar outside the edge of the fender. Also, undoing the camshaft nuts was impossible till I made a tool to hold the sprockets securely, then they came off easily. I decided to use the new genuine Toyota water pump I bought, as I thought that may be causing the noise. However, when I got the covers off, I discovered two things. First, the belt had been installed the wrong way around. The arows showing the outside were facing the inside, and the three marks that align with the crankshaft ulley and the two cam pulleys would not align no matter how many times I turned the engine over. So I thought," Yes!!!, perhaps this belt needs to be on the right way around ot it'll be noisy, and aas it's done less than 4000 km it won't mind being reversed again." But I also decided to use my new water pump, despite the old one being a genuine Toyota one, too, and appearing to be in perfect condition, running smoothly, with a little bit of tightness to indicate a good seal, and having no slack or roughness in the bearing. ButI found it impossible to get the water pump off, firstly because of the two studs causing it to hit the side of the body rail, and because of the sheet metal rear cam cover which overlaps the pump body edge and has to be remove first, What a stupid design! If they'd made it with a tiny bit more clearance around the cutout, you could have slipped the pump off without removing it. That's when I had to make my cam sprocket removing tool, which took another two hours to make, but held them easily. With those out of the way, it was easy to remove the tin cover. The inside of the pump was pristine, so I knew it wasn't that, but, as I'd taken the old one off and the new one wasn't going to be any use siting on my shelf, installed it. The belt is a Dayco,but made in Italy, and the idler and tensioner pulley are GMB bearings, which felt new and rolled smoothly and tightly. Si I'd checked everything and it looked fine and new. The belt had no nicks of damage of any kind on it, and is obviously new, as are the bearings. The tensioner took a large pressing in my vise to return the plunger to the start point where I slipped a wire through the hole. Funny thing was, when the tensioner was all bolted up, the wire could be pulledout easily, as the two holes liked up perfecty. I thought the plunger would move out a bit and take up the tension, but there was tension there (I presume) with the plunger all the way in. So, with much elation, I put the belt on the right way, checked the marks and saw they lined up, and carefully reassembled the cams, using my big and litle torque wrenches to get exact tensions on the big and little bolts. This had to be it!, I thought. BUT... when I started it up without the acessory belts fitted so there'd be no mistaking the source of the noise, There was the blasted noise!!!! Oh, man, was I disappointed, although it seemed that it was a bit quieter, maybe. I was really p****d off. But after driving it a bit, it does seem to be a bit quieter, and my wife (who has no ear for motors) says she can't hear the sound at all, now, and my best friend, who is an optimist, says that it now sounds quiet and the slight soud of whining is perfectly normal for that car. And after Googling 'whining sounds after belt changes, I read of many who got a similar noise, and were told that the new Kevlar belts do that, etc, so I'm holding my breath and going to monitor it and see if the sound gets quieter as the kms roll on. I still don't think it's normal, but I'll see.