David you will have to drill out the wheels. Check the axel size. The front is different than the mains. My front bulkhead was also drilled 90 degrees off. Since I could not get in there to do the drilling I just made up a new mount from ply and epoxied it to the original bulkhead. Mine is about finished. I have installed OS 26 four strokes and just using standard servos. I used better hardware to replace the supplied stuff. Two stroke engines would be much easier to install but I love the sound of 4 strokers in twins. Anybody else out there flying this plane with four strokes? Any advice on ail and elev throws?