Thanks for the feed back. I had about five more minutes with the dremel last night before I took the project to my club meeting for show and tell. I was able to fully seat the hatch and I will be able to access the fill nozzle on the carb and with one more carefully placed hole I will be able to adjust the high speed needle with the hatch on. The only time the hatch will have to come off is for low end needle adjustments. I think this is going to be a field friendly flyer.