Good evening all. Here's one for the experienced techs.

Was removing the water pump from my 86' 560 sel (harmonic balancer and all) and ended up shearing one bolt (my worst fear) that secires the pump in the process. I've had hard times with some thermostat housing cover or pump bolts before so I liberally PB-blastered these well in advance, but one, just one gave me trouble and broke (and I knew it was going to break, I just had no other choice; had to get the pump off).

There is still 1/4" stud sticking out of the valve cover case. Any suggestions as to how I should proceed or anyone experienced this before on this engine? Attempt to extract? Drill out? Weld male stud?

Normally, I would drill it out but I really don't want to since it's adjacent to the water jacket and a 1.5" long 8.8 bolt in an aluminum case...I can't ensure my drill will be on track. Any thoughts?

Adam