G'DAY, HAVE JUST PURCHASED A KRAFT .61 IN REASONABLE COND. I WANT TO TAKE THE LINER OUT TO CHECK PISTON AND RING ETC. DOES THE CRANKCASE REQUIRE HEATING OR SHOULD THE SLEEVE BE JUST A PUSH FIT. ENGINE HAS BEEN IN A COLLECTION AND HAS SLIGHT INTERIOR RUST - (PERHAPS ON OUTER SURFACE OF LINER). ANY IDEAS ON REMOVAL WOULD BE APPRECIATED, THANKS,
JOHN