Dunno bout leather but I used Easy off for some plastic and it worked like a charm. Be sure to cover parts you dont want spray on though...itll just make clean up easier.

The above was a tip I received from others on this site...THANKS ALL!

SOLD: 07 Black BA, 39mm FCRs, TPUSA stage 1 head, TPUSA 813 cams, TPUSA 10.8:1 pistons, TTP #3 igniter, Specialty Spares Long Cannons, Tsukayu Hard Bags. 82HP/55tq NEW: 19 Goldwing Tour DCT