Has anyone been able to free a Rossa door hinge that is seized? One of my drivers door hinges is seized and I have had it soaking in wd40 over night with no luck and dismantling oil for a few hour, I have had it in a vice and can only move it back and forth a little bit. I havent tried heat yet because I have run out of gas in my blow lamp. There is no hinge pin to remove because it is welded at the top and bottom.

Although WD40 has many uses, its not the best product for freeing siezed bolts & brackets.
Plus gas is a much better product for this type of problem. I've also heard that a 50/50 mix of automatic transmission fluid & acetone works really well.
Probably a combination of a good soak & then some heat is your best option.

I had the opposite problem in that mine were loose with a lot of play even though they had never been used. I got new ones from Alan at Rossabitz.

I will try the 50/50 mix today and try to heat the outside up, if all fails I will send Alan a message to see if he still has any hinges, infact you have just reminded me I need to ask Alan about some other items I could do with.