I installed the voltwatch. Then the receiver. Mounted the engine. I'm as far forward as I dare go, and I'll have to add 3 1/2 ounces to the front. I'll put on a brass weighted spinner and add some lead. I don't think putting on a smaller tailwheel will make much difference. I have a 1" on there now. I have a 3/4 one here, but I think I'll leave the bigger one on as i fly off grass.