I would advise not rebuilding, just replace or 5spd conversion.
Mine was rebuilt in August by a 25 year veteran Honda Technician. He had the car for three months trying to figure out why the "tranny overhaul" did not solve the problem. (won't shift out of 1st, 3 gear safe mode works when soleniod is unplugged though)
$700 later we still cannot figure out the issue and my car is parked.
Sounds like your 25year vet isn't that good of a mechanic. I would get my $700 back and take it to someone else. The transmissions that honda sells for these cars are all rebuilt units these days.