I was rattin around our Horror Freight store a month or so ago and came upon a set of aluminum valve caps for my truck tires. They look REALLY nice.... except for one small problem; I now cannot remove any of them. I've only tried penetrating oil so far, but no dice. I'm sure I will twist the valve stem off before the caps will come.
I know I know. I should have put a dab of anti seize on them before installation, but hindsight is 20/20. So no real need to whip my azz over it. I'm doing that just fine to myself.
Any ideas other than having the entire valve replaced on all four tires (not a cheap proposition)?
on edit- they are rubber stems, not metal. If I do have to change them they will be metal.