Hey Bill,
I'm not trying to be argumentive, but I still don't agree with ya

.
An engine produces power, so it is functional weight. Tail weights are dead weight, they do nothing other than adding weight.
The Magnum 91 with my chipmunk (by the way, thanks for recomending that to me) makes the plane tail heavy. Therefore I had to add weight to the nose to balance it. So If I installed a larger engine with the same power and therefore did not need the extra "balance" weight I installed on the nose, the engine would not be considered dead weight no matter how you look at it.
Kinda silly to argue about, but its fun to debate things. I guess we just disagree, lol.
Wings