Stuck bolt. Not broken yet.

[dpetryk]

My problem is getting the bolt out that holds the distributor in the engine. When I try to loosten it, I can turn it about 1/8 revolution before it begins to sieze up. Im afraid that if I put any more troque on it the head will end up in my wrench. So I can rock it back and forth about 1/8 to 1/4 trurn. I have tried penetrating oil. No help.

Everything is working for now so I dont want to make a problem. But it needs to come out to replace a leaking O ring. Also the screws holding the dirtributor cap on are also frozen. If I break the heads off of them then I need to get the distributor out which I cant do either.

Any techniques for coaxing a bolt / screws out would be appreciated.