Jim,

I don't know if I mentioned it earlier in the thread, but a year or two ago the heater core developed a slight leak that I fixed by flowing some hot water with bars leaks through the core. That is a patch at best, so I want to replace it if at all possible.

fish4stripers,

Thanks for the links. I just got back from Sears and got every gadget they had that might have a shot at accessing these screws. If none of these snake oil gadgets work, I will order one of those flexible drivers. Thanks a bunch.

Have a great day,