I just took a look at my IP over lunch. I feel even more strongly that #2 is the way to go. Even drilling straight down on that tab will be difficult as there is little room. Removing the IP to do this would be, IMHO, just ridiculous. If you make a nice, strong simple L-piece and bolt it on, there is no disassembly or drilling on the car at all. In fact, if part of the tab is left with 1/2 a threaded hole, the same idle adjustment screw can be threaded through the L-bracket and then through/into/guided by the remaining threaded tab below. Either way Kris, good luck, I bet you get this fixed OK. Looks like you made a pretty good effort in explaining the issue.

__________________
'82 300SD - 361K mi - "Blue"

"Good judgement comes from experience. Experience comes from bad judgement."

listen, look, .........and duck.