Working on my 1/5 Sopwith Pup and i have a small problem.
I have a Saito 91 i wanted to use, but the engine sticks out abit to far outside the cowl

The firewall and Sub firewall is already in place unfortunatly i didnt realize any of this before hand because i wasnt thinking ahead like i should have been

My question is this

Is it ok to extend out blocks for the cowl to mount abit farther out than the plans state.
Or do i HAVE to recess the mount into the firewall?

It will be much more work having to recess and it seems to me it would affect the CG, as far as i have read these WW1 planes are notorious for needing weight in the nose??

So extending the blocks and blending everything in so the cowl sits out farther seems like a better idea

Also i forgot to mention its about 1" at the most i think.

Any experts have any solutions to this problem??
All help and suggestions are appreciated.

Thanks