I have a new super tiger .61 ABC and when I was trying to break it in I noticed it made a bad sound when flipping the prop and it was hard to get it past top dead center,when it hits TDC it makes a squeeking noise,I know it has to due with the piston and sleeve.I did get the engine to run and got about two tanks through it but when it cools down it get's tight again.This is my first super tiger will it get better the more I run it?

Thanks