Hello, I recently replaced my IF board in the TS-430S but now I don't have the CW sidetone. And related to this I'm sure, the transmitter will not key with VOX turned on. If I flip the Send switch and attempt to send CW, I still do not have a sidetone, but the transmitter will transmit correctly. In order to listen to what I'm sending, I would have to turn the volume up on my external keyer. Anyone know what may be causing this? Perhaps one or two of the 20-sum odd plugs in the IF board need cleaning? Thank you.