This problem has been discussed here multiple multiple times. The most recent discussion was in July:
https://forums.maxperformanceinc.com...d.php?t=851666
I'll repeat what I've said many times in the past, your problem is corrosion between the alloy drum and the iron liner. The corrosion slows the heat transfer from the liner to the alloy where the corrosion is located. Cold they will be fine but as the drum gets hot, it effectively goes out of round and you get the dreaded judder.
You can play about adjusting the drums till the cows come home but if you want to solve this problem, getting them relined is your ONLY choice. Links above seem to have produced good results.
Good luck