ok, i brought it to a specialist yesterday. During the test drive it didn't crunch until right at the VERY end of the test drive. I think he did go from 3rd to 2nd then. He concluded synchros but he added they weren't that bad enough to be replaced now. maybe the MT90 needed a bit of "running in" before it starts to work well? then i took it to my mechanic the evening. He drove it and he drove it HARD. No crunching whatsoever but it ONLY did it when he skipped a gear from 4th to 2nd (which is the cause of my crunching) at 70km/hr. He said this would be "normal" because in reality, you are not supposed to skip any gears when downshifting as it causes unneccesary strain on the box. That didn't make sense to me. however i do realise that everytime i track my car, i ALWAYS go through the gears 4 > 3 > 2 but the main reason i do is engine braking and heel toe cuz it looks cool :P i did some googling research and i found this on a supra forum... so, in reality, you really shouldn't "skip" gears as it causes unneccesary strain on the box. This makes sense when the tranny specialist was driving it never crunched until the very end of the test drive. but even then the crunch wasn't that bad compared to what i experienced. but even that when it started to grind, i didn't force it into gear: i just clutched in and out and it slipped into 2nd no problem. so in a way that was "double clutching". no more noob shifting from me anymore. i want my box to last more than 160,000kms lol. hope the 10-20 times grinding/crunching didn't cause that much damage to my box :( well... at least i got the MT90 in there now. which would help with worn synchros. :) coming from a 4spd carby to a 6pd fuel injection i'm still learning even now lol. one of my first threads on this forum was "a strange bouncing sound at high rpm" this was limiter -_-