I took Cavazos's advice ....

there is room under the hood to raise the tank a good 1/2 to 3/4 of an inch... stuffed some foam underneath the tank, Dremelled a new hole, Patched the old portion of the hole with light ply and 5 min epoxy......

OS46FX runs great now.

It is a fun plane to fly... worth every bit of the construction hassles....... best bang for the buck.