Originally Posted by Zeeper
if they were installed with locktite you can heat the head of a screw with a butane torch, a hair drier, a flame thrower, etc and they will back right out.
I doubt they are seized up with corrosion, but it would not surprise me if they were installed with locktite.
Thanks. I'll try that. They're brand new cross bars with a screw that has to be removed & replaced. I'm doubting there's any corrosion there.