Please help. I just picked up a 97 750 sts 3 seater with some engine troubles. Im going to need a cyclinder sleeve, 1 piston pin and the cyclinder head has some metal on the surface of the bowl. Ive been told you can use some type of acid to clean the material from the head. Any help? Im not sure what to use. Ive got everything else already to put it back together including a used bottom end from a 96 750 sts, (Crank, rods, and case.) I have all new Genuine Kawasaki pistons, rings and gaskets.
Thanks in advance...

p.s oh and yes I also have a 95 polaris 750 runs great!