Warnberg;

424 plane - - Great Planes Viper with the TT Pro 40 engine and APC 9-6 C2 prop. There are modifications to improve the durability and reliability of this plane posted on these forums. Do a search.

It looks like you've been really diving into the rules! That's great.

As to the claiming rule, I've never seen or heard of anyone invoking that rule. Has anyone else?

I don't think it's anything to worry about in any case.

Doug Bebensee