#5 he's asking if you used a torque wrench to tighten the for nuts to the proper spec..meaning a wrench with a meter/clicker on it.
#2 The Piston rings aren't gapped from the factory. Once the engine warms up they can expand, the ends will touch and the bulging will catch on a port window. If that were happening, you would hear it but it prolly hasn't run enough...still a good idea to go in with a feeler gauge and check it in the near future.( I didnt do it on my first kit and never had a problem for 500mi. Same with my kstar. But I did kill a brand new Moby top end..thats when I found out about gapping :p)
How did you jet the carb? What emulsion tube are you running? Needle position?
Id bet either you diddnt set up the carb or you gotta leakypoo somewhere