I started the fuse and was looking at the F1 firewall. I decided to make a new firewall because I don't like the way it is joined with F1T so close to the blind nuts. After making a new one,, I thought, (shame on me) I could just drill the holes as per the kit F1. But,, guess what,, the holes were not mated to have the engine centered on the firewall. Perhaps this is to compensate for the right thrust built into the kit. ( I will not add the right thrust, I prefer to use right rudder on t/o and have a straight bird.).

But I looked at F1 more closely,, and as other parts in the kit,, F1 is not square. dah,,,, Glad I made a new one. Now I will check all bulkheads for square prior to assembly. Perhaps I am too picky and all the out of square would be magic and end up with a light straight plane. But,, I guess I will just have to make all the parts fit. []