Thanks again to everyone for the responses. So I would like to share some results. Jofunk, I checked with the protractor and wow, the 15 degree angle points about 1.50" behind where I had the CG. In contrast Jetmaven, the online CG calculator indicated 0.25" ahead of where I had the CG.

I think I know why no one makes this plane anymore....

I would like to simply change the CG to the 15 degree pointer mark on the protractor. The problem is, the fuel tanks cannot be moved any further aft. This CG location would be completely behind the tanks...