I have a Blaster with the 240 big bore kit and many other extras but need to ask a question. I scarred the piston (leaned out) at top end and melted some aluminum on the cylinder sleeve. I have been told that Boric Acid will dissolve the aluminum and not hurt the sleeve, but of course you have to be careful not to let any get on the cylinder itself. Is there anyone that can say yea or nay to this?  If not is there another way to clean the cylinder wall of the aluminum?
Thanks and more HP to ya!