I worked on the manual trim tab plate this afternoon. It was pretty straight forward. Before I start working on a project, I like to think through the entire assembly. (I'm starting to LOOK before I LEAP.) I also try to see any problems that might creap up.
I modified the hole pattern by about 1/8th of an inch. The holes seemed to close to the attach nut. (Luckily I did, It was hard to squeeze the rivets where I placed them. (The plans have the holes almost UNDER the nut.)