I just set up a Yaesu FL2000B to my FT920 transceiver and everything is set up as per instructions in both manuals. 1) I have both the relay and ALC connected directly to the transceiver as per the instructions in the FT 920 manual. I have a proper separate ground for the amplifier. 2) My transceiver is reading 50W at peak power on the MFJ 962C antenna tuner with my RF power knob on maximum (This could be a potential issue with the exciter input not being high enough). 3) My preferential settings for max ALC on the FT920 is 100W output for Antenna A (which is my default antenna) – which means that there is no max limiter on output power 4) Upon transmit with the amplifier on and warmed up, my MFJ wattmeter is reading 100-150W. So there is amplification taking place. I am utilizing the plate and loading current settings for the bands as per FL2000B instruction. I am wondering if I should increase plate current to offset my low input signal to the amp. If I do this, should I increase the loading current then by some proportional amount (SWAG). I am trying to figure out what I am doing here that is limiting amplifier output. There must be some type of tweak that needs to happen. I am getting closer I think and might try adjusting both plate and loading current upward to see if that helps.