The Easy-Off is one of the best, but you need to be careful and wear gloves and goggles when using the stuff. Brake fluid is another alternative, although I haven't tried it. There is also a purple liquid made by Castrol, I think, and available at Wally World (Wal-Mart).
There is one other method: Take a well-used credit card, put it in your wallet and go to the local hobby shop or internet and use it to purchase a replacement kit.
Stay AWAY from gasoline, unless you like seeing your kit in liquid form! The same is true for lacquer thinners.
Gip Winecoff