Removing a stuck Mexican Hat

I bought a 220 with Mexican hat dual centers on it. Someone down the line had tried to take them off, and did not do it right. They worked on it quite a bit with a torch, which should have been my first clue. I have a set of Puller bolts that I have successfully used on my 70 series tractors, but the threads in the wedges are already stripped out on the Mexican Hats on the 220. They are mounted flush with the axle, so beating on the end of the axle (which really helped on the others I have done) isnt easy to do. I mounted a dual on one side and let the air out of the inner tire to see if I could work the wedges loose that way, but nothing doing so far. Does anyone have any other ideas? I have owned the tractor about 6 months and have been soaking it with penetrating oil occasionally since it arrived. Thanks in advance.

How about pulling from the bolt holes from the inside casting to the Mexican Hat holes? You could use 8 long dual bolts to pull with. A few hits with a hammer and it will slip right off,,,,,,,,, or not.

7060- I thought of something similar but didnt figure I could make the weld hold. I also thought of trying to team out the holes and thread them to a larger size but didn't figure that would work very well.
Unit 3 - I think I will have to try that. I've got some dual bolts I removed just the other day off another tractor that might do the trick. I had tried "persuading" it in with the bucket of the tl12 and didn't have any luck that way, but I'm willing to try about anything.
Thank you all!

would it be room to get a port a power cylinder , lay on the axle with a piece made to fit the inner chock and push against it?? just thinking..

The pusher bolts are a odd TPI so finding a nut would be hard to do.

the thread is 7/8 12 pitch they dont make a heial for it you could go 9 pitch  but you would have to turn out new bolts.

Wasn't sure what the threads were on them. You could go to metric maybe. I know the lug bolt studs off a unverferth grain cart are very close. Might check with Fastenal if you decide to go that route as they would be your best bet for finding something. I don't know why you couldn't cut the heads off some grade 8 bolts and push into the holes first and use regular bolts rather than having something longer machined down on the end.