>As requested, with a few examples - in each case I believe the goodtbl{n} and badtbl{n} should give the same results.In all cases, the goodtbl{n} results are what I expect. In the case of badtbl2 & badtbl3, I think the results should be identical.

I've spent a little time with this now and I can't make sense of it. I'll try to get back to it later and see if I can come up with a rational explanation.

Tamar