No I actually meant opa2365, which is the I/V opamp in the Gamma2. I had an extra that I temporarily used when I was having initial trouble. I've used two different opa2865s before the 2365. Both produced the same puttering noise. The 2365 didn't. Then I just got the LMH6643, which appears to be working fine. I'll eventually try swapping it back out for the opa2835. I have at least one virgin lying around. I do like the sound of the LMH6643 definitely better than the 2365. The 2365 seemed to have more glaring uppermids. The 6643 is definitely smoother. Let's hope the next 2835 works out.
Good luck Misterrogers! Next up to bat is "The Wire"!