OK some advise please. Ran my M05 for ages on the standard tamiya pinion but eventually the teeth hooked and it gave up. Put in a new .6 module pinion plus a new gear train and the primary gear the one the pinion meshes with lasted just 3 races when I removed it several of the teeth on just one part of the gear had collapsed and burred over. So did I do something wrong?? What do you guys use for lube on the gear train? Dont think the prob was lack of lube but maybe the wrong type??