Hi Doug

I haven't had my nose in here for quite some time, so apologies for being late picking this up. I assume you are THE Doug Weller, ex-moderator of the Usenet group.

Anyway - tenons. It would be a simple matter to place a timber of equal or greater thickness than the height of the tenon on each side of it. The lintel could be raised by means of a ramp or crib and then be slid ontop of these. Levers could then be used to raise the lintel slightly while the timers are removed. So, I guess it's a case of "ET go home". :o)

Steve Gray