Hi Folks,   I have a 69JTV and 59JTV. The issue is that I live in Hawaii and sending it to the mainland to get serviced is cost prohibitive. The low E on the 69 is breaking up and cutting out so its time to see what I can do. If I am unsuccessful then I will send it to a shop. I wanted to compile all I can about how to maintain or replace the piezos.   1. Recommend a contact cleaner spray? 2. What is the translucent insulation over the contacts in the video below and how do I replace it?