I am relatively new in this hobby and currently building a YAK54 whose assembly manual isn't really clear.

What I need to know is what angle (if any) the engine should be mounted. The manual says engine mount holes are drilled with an offset, to offset the built-in thrust of the engine - but the kit did NOT come pre-drilled so I have to drill the holes myself.

So, how should I go about drilling the engine mount holes?

Any help would be appreciated.