Sounds like limited experience is complaining here. Off center mounting holes on a slanted firewall is built in right thrust with offset alignment to center the crankshaft back onto the fuse centerline.

I have assembled several Lanier/Goldberg ARF's (Ultimate and Extreme 3D) and found them to be very high quality. The low price of the Razor may indicate they come from a different asian factory.

I find it amusing many folks will whine about some imperfection in an ARF, especially the low prices ones that you couldn't even come close to building one for that price, and probably not come close in the quality too.