D6b roller removal.

try soaking with loose juice for a while--smack the head of the bolt a few wacks and see if they will break loose-with a big breaker bar

Make sure you hold the tapping strips in place with the rock guard bolt holes between the rollers, you don't want them loose inside the frames.

Can you still purchase the tapping strips new? If so would you have the part # handy?
Thanks

If you can purchase the tapped strips I would.
When l changed the rollers on a d68u I cut or broke all the bolts then removed the rollers and cutting the bolts as flush with the swing frames as I could. Then cleaned out the track frames and drove the bolts as strips up with a punch and hammer. Next pulled the strips out of the frames and cut what was left of the bolts off with a zip cut. Then put vise grips on the rusted ends of the bolts, heated the strips a using the vise grips wound the stubs out. Cleaned the holes with a tap and reused them.

Have a look at your swing frames if you can get the strips out with the stubs of the bolts sticking out I sure wouldn't fight rusted bolts or run the rusted ends through the tapped strips.