At 04:23 PM 1/28/2009, neil N wrote...
>The lower ball joint adaptor is removed, and I need to drill out bolt
>remanents. If I don't drill dead center...

I've had luck in similar situations drilling a small hole along the
edge of the frozen bolt. The bit will tend to follow the soft, rusted
area between the bolt and the hole. That doesn't screw up the bolt hole
enough that a new bolt will flop around. For what I was working on, it
did relieve things enough that I could then drift the old bolt out.

Or, if you know a shop with a heavy duty press, they might be able to
press them out. I assume you've already tried to drift them out with a
mini-sledge and lots of heat?