I have a 242 GE channel. I cannot borrow a modded G channel to 292. I found out all the pots are the same. The HF Frequency pot on the G is wired to be 1/2 of 47K ohms so you need to one cut one wire that drops the pot to 22.5KV. The swap really isn't super difficult.
I still do get the pop in the circuit when the bell/shelf switch is pushed, but I think if these were completely fresh switches it wouldn't be noticeable.