Just a status update, good news, the PTT functionality works. The PTT worked intermittently before, ended up being a faulty switch, which has been replaced. To eliminate possible problems, the connections from the 2.5mm jack to 4 wire leads on the board were resoldered. Bad news, audio for both LH and RH sides are still not functioning properly, very low signal to noise ratio, more static and noise, there is some signal getting through as you can hear the diaphragm working, but mean either some faulty or improper connection or some internal resistance issue of the headset, impedance? At first the jack height played a difference, but as you can see from the pictures below, when the Comtac jack is inserted into the PTT, the corresponding metal leads seem to touch in between the insulated areas where they should be. Not sure what additional steps I can take to resolve the issue. Perhaps some in line amplifier of some sort to boost the signal? In meantime I've got a separate PTT coming in, hopefully that will work out of the box, and I don't get two lemons in a roll, assuming it's the PTT that's faulty and not the headset.
Front
Rear
Replica Comtac Military Plug (U174/U or Nexus TP-120) w/ Replica Peltor PTT
Ztactical Comtac Plug Mated w/ ZTactical PTT
Replica Peltor PTT Nexus TP-120 or U174/U Cover Closed
Replacement Switch (From LHS to RHS 1-Fault OEM Switch, 2 - Replacement Switch, 3 - Replacement Switch Filed and Fitted to Board, 4 - Replacement Switch Top Engagement/Click Assembly Filed and Fitted for Optimal Height For Peltor PTT)
Thinking About Getting A Female Nexus TP-120/TJ-120 For Connector
New PTT On The Way
Oh and just in case other people where also looking for a replacement switch, just in case their's takes a dive, the size of the OEM push/button switch is approximately ~0.372"X0.212"X0.415"(LXWXH), the length and width were measured roughly between the solder leads. I'll report back, if the status changes, if I can get this PTT up and going, or if the replacement one is functional.