O_scar

I recently purchased some toyota matrix maxspeedingrods coilovers to fit my 03 corolla sportivo. The fronts fit well and are low. The rears fit, but they are as low as they can go and are still very high. The coil is screwed as low as possible into the bottom mount. When I adjust the height with the locking perch thing the spring goes all slack and jiggles around. Is there a way to lower it further without the spring going slack? Or will I just have to accept it won't ride or handle very well if I lower it further? As you can probably tell I'm a pretty novice 'mechanic' Images attached. Thanks

https://imgur.com/bqEgERT Hello as you can see per the photos I've undone some random plug. My intentions were to do a gearbox fluid change, and I was meant to undo the filler plug. When I undid the mysterious plug, a lot of fluid drained everywhere (1-2 litres approx.). The fluid kind of smelled like burned clutch?? Just wondering if this fluid was gearbox oil or something else. I'm gonna replace the gearbox fluid anyway so just wondering if its any concern. As you can see I'm a very inexperienced 'mechanic' so sorry if this is a bit obvious or tedious to answer. Thanks