I fired up my DL50 that had the bearings spin last summer for the first time. I rebuilt the engine with new bearings, crank, and crankcase. It wasn't broke in yet when I had to rebuild it so now I can finish the break in. It is running like a Swiss watch and I could not believe how well it started. I gave it 5 or so flips with the choke on and the ignition off. Turned on the ignition and the turned off the choke. One flip and it fired up. You should see what it does in an Extra that weighs less than 16 lbs all up weight.