Welcome back Roger.
Dave, you fixed it before I even knew you posted. Way to go.
seanychen, I've read in the past of success stories on cutting the tips of other fun fly wings and always wondered how the UCD would fair with them clipped. I may have to try that.
JKH, there is 5/8 inch of space under the fuel tank. Pull the tank and install the battery there, then slide the tank back in. You have to do what you can to not add dead weight. Also the supplied engine mount is longer than what is needed to put the spinner at the factory recomendations. There is room on the cowl to stretch it out further if needed and still be able to mount the cowl. Good luck, Joe