Actually, if I could measure properly I would be a lot more help

. I used a ruler and did not account for the space before the ruler "starts measuring" which is about 1/8". This makes my measurements I have given you 1/8" too high. The cushions are 1 1/2" rather than 1 5/8" and the wood gap is about 1/8". I think Glen is correct. K55 rails should have been used in all likelihood. Sorry for the confusion and many thanks to all for the diagnosis. Now to find someone in Denver that can do this without destroying my table...Thanks again
Chris