I'm new to this forum, but was relieved to find it, and am hopeful for some help. My older TW200, a 1987, is having trouble with the turn signal switch. The last couple months, the left signal worked very hard and felt gummed up, then quit working. The right turn switch worked until yesterday, though it still moves freely to the right and cancel position okay. Can the switch inside the housing be cleaned, repaired, or replaced, or does the whole unit have to be replaced? Can I open it to see what's going on? If the whole housing unit needs to be replaced, where is a good place to look for the parts? Thanks so much for the help.