Anyone know of a reasonable Sub Zero repair service? My Sub Zero freezer condenser keeps freezing up. I replaced the cracked door gasket and was hoping that would fix it, but no luck. Takes about 1 week or more for it to freeze up enough to start warming up the freezer. Of course this is an ancient built-in, from what I can find looks like it's ~1975?. Never any issues with it, it was in the house when we bought 20 years ago. Obviously with the age, don't want to spend a fortune, otherwise I'll bite the bullet a buy a new one. I can't see anything new being this reliable though.