Joe
You were very helpful. I did make thicker fins, they are laminated 3/16!QUOT! balsa center with 3/32!QUOT! balsa sheeted in different directions on both sides. The fins will be glued in permanently, and I can beef up a fillet around the base as well.

I do plan on shaping the rear of the fuse into sort of an intake with maybe some air scoops, still designing that part. I was even thinking of enclosing the engine at one time, but did not see any advantage to it. I am wondering about some sort of cushioning between the engine and fuel tank which is just 3 inches in front of the engine, I am thinking fire prevention here, in case of a crash. So once I figure this out I will also finish the air flow for the engine as well. Moving the engine is still possible, I am waiting until I do a balance check so I can use batteries and the engine to get the CG right.

I was, just today, thinking of how light this plane will be and had the same thought you did about the residual thrust. So I think a speed brake may be a good idea. If it is not needed, it can always be removed. I can just imagine a calm day with the engine at idle and it just sails right on by the runway.

The wing tip fins I had in mind, would also be extended below for skids in case of belly landing, as my elevon servos are on the bottom.

I have searched for all of the various mods of this model and that is the reason I decided to try one myself. So far I am having a blast building this. I have some ARFs, ie Kangaroo and MB 339, but I still like kit building better.

I can send some more pics when I get farther along with this project.

I guess I did not have a decision #3 ????

Any other tips are appreciated.
Randy