I replaced the EOM driver that was attached to the south EOM with the Bias Tee and the driver which I tuned with the Bias Tee and Dummy EOM. After some minor tuning, I was able to move the transfer functions peak back over 37 MHz. I took the spectrum of the RF monitoring port while a 16.5 dBm signal was present on the RF in port from OCXO after placing an 8 dBm attenuator. We noticed that the max peak at 37 MHz was around -3.49 dBm which corresponds to a signal with an amplitude of 6.4122 V by converting to voltage, multiplying by sqrt(2) and dividing by the value of the simulated TF at 37MHz which is about 0.0328. This is less than the expected 20 V amplitude from a 16.5 dBm signal with the transfer function from the previous post (https://nodus.ligo.caltech.edu:8081/CTN/2376). This motivated us to take transfer functions at different input powers to see if it does change. We can see that it does a fair amount for large input signals. I can offer no explanation at this time.