
Three of the studs came out fine and I noticed some genius replaced one of them with a regular construction bolt that must have a slightly different thread pitch. Either that or they didn't apply any copper anti-seize.

I've tried removing it with the two bolt technique, tried torching the riser and freeze spraying the stud... Even let it soak overnight in an ATF-70/Acetone-30 mix. Nada
Is there something else I should try? Or pick a new one up for $25 I found on eBay?