Dennis,
Im sure you may have thought of this but I don't think it would be that hard of a job to remove that non working hydo-pump and take it to a local hydraulic repair place
Maybe they could fix it / bleed it for you and you may be back in lift business for around 50 to 100 bucks v/s a new lift.
There are (4) hydraulic pump repair places just north of Lexington, all look like they are in the vicinity of each other on Georgetown rd (Hwy 25) out of Lexington.
Power Train appears to be a good place to try.
900 Nandino Boulevard
Lexington, KY 40511
Get directions
(800) 999-6529
or:
Applied Industrial Tech Inc
1111 Majaun Road
Lexington, KY 40511
Get directions
(859) 252-8426