[Zeke]

I don't know what made it rust, but that's not good. I installed my own sectional door. It takes quite a bit of time and finesse to get the spring wound up. Unwinding it safely, removing the whole tension bar, place the spring on it, reinstalling and tightening would be a couple hours for me. Yes, I would do it if I had to, but if you have the money to pay for a service call and parts, I'd hire it out.