Cheers for the response, ill carry on searching.
I removed the old one, split it, heated it, soaked it in wd40 and the only way to get it to shift was with 2 wooden blocks and hammer which was a last resort and not much use as it's made the pot go in not out. I cant twist or pull or anything, I tried blowing it off with a bike pump contraption I rigged up but that was also unsuccessful but I backed out at about 80psi scared. After 4 hours of messing about I thought a replacement would be the better thing to do.... I might try the pump again now its had the hammer treatment but dont want to be back doing this again in a few months.
