So turns out the gently used 421 I just bought froze between the time I signed and the time I picked it up. Van had a heater in it the whole time but it got in the single digits a couple nights... oh the joys of equipment ownership...
packfancjh said:Have you been able to take a look at the damage? If it's a small enough crack in the tube it can be brazed if it needs replacing let me know and I'll see what I can do for you.