I found some decent hacksaw blades, no difference, still poloshing the pin, tried my reciprocating saw with a Bosch blade, still the same, the pin has been hardened beyond the realms of sawing through it with a hacksaw
I made a tool today to push the pin out, I used a big bolt and a couple of spacers out of the scrap box. I didn't have time to apply any heat so left it until tomorrow.
Talking to a mate with a MF 165, he appplied about 12 tons with his garage press and a torch and couldn't get his top pin out so he made an adaptor for his air hammer and that shifted it - again needed heat.
So seeing as I'm donating a few gallons of homebrew to his new year party if my method doesn't work then I may try his next as he said he would lend me the tools. Trouble is I have no oxygen so a plumbers lamp is the best I can do heat wise. I could run some compressed CO2 through the pin to cool it down a bit while heating the casting. Hopefully it won't get to that as the MF has a different pin arrangement with knurling on one end.
Cheers
Andy