Seems like that Canada design is more reliable. My lighted plastic rocker power switch is unstable. Light usually goes out about 30 minutes after turned on. So I’m having to double and triple check to make sure I really turned it off (it was accidentally left on for over 30 hours). Mine has the 6550s, btw.I have a 1982 that I got a few years ago. Canadian edition. Caps seem good but I do have replacements. Such a killer little rig! I also have a Lynch Mod.