ae rc18 t2 b2 power train problem solution.

I think AE should not have to release rc18 t2, b2. rc18 t2b2 has good shape at first look.
But It has some problems in detail. front belt can not but meet with pinion gear. so I put bearing tension. It is the key to prevent from belt cutting.
second big problem is that spur gear meets with rear diff case. I trimmed diff case. no problems I have now.