I have used laquer thinner on cold pipes. Put it on cloth rag, lay over the pipe, give it a few minutes to soften plastic, then with a little effort wipe it off with a clean soft rag.
I have the fever too. 2005 6120 Brian Setzer sslv and a 70 Fender Twin Reverb. Also play a Fender USA Jazz 5 Deluxe thru a MarkBass and my beat up old doghouse!
Springfield Mo. Has a Triumph Dealer now, just off I-44 East of Springfield. Also have Engels in the Kansas City area. The Triumph dealership in ElDorado Springs Mo. Is unfortunately no more.