Thanks Jim....I had to take a break...

I think this is a good time to bring up something about overheating in general on 20 plus year old cars...

In the old days when someone rebuilt a block they would take everything off of it...and take it to a place that would boil it out... it would be really clean everywhere... but the part that mattered most in the long run was inside the water jacket of the block ( head counts too ... but focusing on block here)... there is a place typically at the lower back part of the water jacket where the flow rate slows down and stuff is deposited over the years.... and often on these heavy blocks you hear of people renewing sleeves, pistons, rebuilding head...and heading into the future thinking they have a new engine...

Then some summer arrives and they see slowing climbing temperature readings.... and they do all the 1st and 2nd level cures which people suggest....and sometimes that works... but sometimes the fudge area has been taken up by the lack of cooling at the lower part of that old block and those fixes don't work...

If the other stuff does not work.... I suggest taking out the freeze plugs and making something which can be pointed into the lower corners of the water jacket while suctioning water out at the same time... I say it this way because you can't just let the water get into the way and still have enough turbulence and pressure reaching that area of crud.... and it may need to be at the same time as an acid flush happens....and it may need to be done repeatedly to be successful ...
Greg