oh my goodness. I'm amazed at the lengths all of you went to to help me out with this block. I wrote to the block's creator, but got no response. I'll try to get the mag...but if not available, I'm going to just jump in and give it a try using the info that you have shared. 'Thanks' is not enough to express my appreciation to you all, especially to bearisgray who went to trouble of making the block to see if the theory worked.