Hi All,been a while since i was on due to other commitments,started getting back into the bike,no4 piston was seized and i broke a ring trying to free them up so will replace all rings on all pistons,cylinders are all fine.since the whole top half was removed i decided to take the rest out of the bike to thoroughly clean up the frame.it would appear the whole frame was at some point "coated" with some sort of durable long lasting coating which after 25+ yrs is still perfect! no idea what it is but its amazing stuff.In the process just now of scrapping away all the loose black enamel from around the engine prior to respaying with more enamel.still trying to figure out what front end was put on the bike so would welcome any thoughts thanks.the left fork seal leaks slightly so wanna replace that and was stunned to find the rear shoe friction linings had came off and stuck to the inner drum! so need to find out how to measure those so i can replace.Thanks for all the previous help/info.