[Drake] help with Drake TR4-Cw / Hallicrafters HT-41 amp hook-up

[W4MJR]

I have this Halicrafters HT-41 amp that I have been using with my HT-37 for a few years and been working great. For a change I am wanting to use my HT-41 along with my Drake TR-4Cw . I know this should be an easy hook-up but something is not just right.
Now with the amp in line my receive has gone away. Here is the way I have it set up.
(1) coax from out of the transciver into input on the amp.
(2) coax output on the amp going too antenna.
(3) 2 wire jumper from my Drake AC-4 power supply vox relay going to amp cutoff Bias terminal strip. I don't think it matters which wires on the bias terminal goes.

The amp keys and power output great. Just receive signal very low. If I remove the transciver coax from the amp input and direct back to the antenna the receive comes back in as it should.

Thanks,
Mike W4MJR