Hey! Damn man, you should have checked the events section. You posted this question while we were still at our big mk2 meet for the year, there were 14 mk2s out there! You can give me a call at 604-431-0845 if you like, I'll see what I can do to give you a hand. Sounds like you need a new rad. Your description of your trip sounds identical to one I took in my old 82 several years ago. There is something wrong with your cooling system, I'm guessing you have a leak somewhere. If your rad is as flaky as you say thats probably it. For me it was a leaky heater core valve.