I have an article from RCM from Sept. 2000 on how to make a cowl from balsa. Appears straight forward enough after reading it a couple times. However it mentions that the engine mount that comes with the kit will not work for a balsa cowl. It does not state why and by looking at the engine, engine mount and firewall can not tell why it will not work.

I have the tower hobbies .75 ABC engine with a .76 Bisson pitts muffler and was planning on installing the engine sideways.

Anyone know of the reason why the supplied engine mounts won't work?