Ken, thanks for the advice. The router bit it is. I did try this once many years ago and was not real happy with the result. So where it is critical, I might try the block plane--sometimes slow is better. By the way, my router is pretty big and heavy and a little hard to get precision. Is there a special router that you recommend--something smaller and lighter, perhaps?
We have purchased the formica top and in a couple of weeks will be trying it. Our intent at this point is to remove the trim, hopefully not trashing it in the process, lay the formica, then re-apply the trim.
Wish us luck.