Cadima, I have a 8T 2.0 that I converted and previously had a 8T 1.0 that was converted also. I will say that you are correct about the servo saver spring being too strong. I have seen a suggestion about using a Fioroni servo saver spring from Amain hobbies. I am going to try it since I destroyed the gears twice in an AE XP DS1015, which is supposed to be pretty good. Another issue about all 8ights is the wear of the front center driveshaft. The angle of center diff to front diff makes the driveshaft wear faster than the rest of the driveshafts. As far as the battery tray, if you use velcro on the tray and the battery you shouldn't have any problems with breaking the tray due to nosediving. I am running a Tekin 1700 combo on 5S running 16/45. This is probably fast enough for most but I previously on the 1.0 had the MMM 2200 combo and it is faster. Granted I absolutely love the sensored action of the Tekin setup I will probably upgrade to the Tekin 2000 motor. Hope this helps, just my .02 cents.