TI-99/A

Hi, First off I want to thank all who contributed on using VHS tapes as storage, I really appreciate your input. Now my problem is with my TI-99\A home computer. I have noticed that the keyboard is dying. I have been having to hit the keys harder and harder and now some don't work at all. I took it apart and the keyboard seems to be one unit (not disassemble-able). The keycaps don't seem to want to come off either. I was hoping to take the keys apart and clean the contacts but I don't want to break them, if they aren't so posed to come off. Does anyone have any experience cleaning these keyboards? If they are a "toss and replace" component, does anyone know where I could get one? Thanks for any help you can provide. Andrew Strouse ( kittstr(a)access-4-free.com )