Hi David,
Yahooooooo!! - I fixed it! I checked the supply voltage you mentioned
(+44 @ output npn transistor collectors) and it was OK. I then followed
the regulated +44 that you initially had me check back on to the F-2624
driver board and HELLO the second place I checked (the + side of C07 &
C08) and it read Neg. 15.4v instead of +43. As it turns out both R33 &
R34 had changed value from 180 ohms to around .5 Meg ohms. I replaced
them both and the receiver sings like bird.

Once again, thanks so much for your patience and help.

As it turns out I didn't need luck - you were helping me .

Cheers,
Joe