by RichD » Mon Oct 22, 2018 6:29 am
I have never had a problem with JL/AW gears themselves, the real problem is that the cluster gear shaft is a little too short. Often the cars are assembled so that the lower end of the cluster gear shaft does not fit into the hole in the base chassis and the whole works is tilted resulting in a poor gear mesh. The fix is simple enough, first press the cluster gear shaft further into the driven gear, then press the drive pinion up a bit. Now the lower end of the cluster gear shaft will fit in the chassis and the gear mesh will be greatly improved.