First of all a fly wheel puller is only 10 bucks off of ebay, tell the stealership to f-off. Check to make sure that the choke tube is attached and that the float levels are correct. Also, I know that you just put new pilots in it, but check to see that they didn't get plugged back up. Especalially if you cleaned your carbs with a q-tip, the pilots will get clogged up time after time with the q-tip fibers. Are your carbs synched? Try some 27.5 pilots as well. If it fired up on both cylinders, and then cut out, it sounds to me like your pilots are clogging. Also about your compression test. Your supposed to check it wide open throttle, on a warm motor. If you have low compression on one. or both sides you can pour a little pre mix oil in the cylinder and re-perform the test. If the compression rises, that is an indicator of worn rings. Try all that and report back.
Ryan