[T77911S]

update:

put new gauges on today.
C2 that had the flutter:
hi side was 500. low around 150
I said this the first time I was up there, the fans don't sound like they are blowing that hard and the air coming off them seems very warm. so the other guy had a board for the "variable fan speed" (well duh). so we put that on and fan speed still the same. well duh again, its connected to C1 which is not on. so I move the sensor to C2 on the cond. WALLLLLA! we have proper fan speed!!! the hi and low sides come down, SH and SC are about 14!!!! mystery solved for C2.

C1-
low side still low, low SC and hi SH (all this before fixing the cond fan speed issue).
so I put some 410 in.
same thing except now hi side is really hi. (then we fixed the cond fan).
hi side still hi.. low side still low and SH and SC very hi.

well duhh! it must be a bad TXV valve.
now I am sure we have too much in there.

going to replace the head on the TXV and I suspect I need to pull some 410 out.
oh well.
I got caught up on the other 2 saying it had a leak and was low. but I take the blame for not seeing a bad TXV sooner. I was a bit leery of it being low with the hi side as hi as it was, but my fault for not following my instinct.
my lack of experience. I just don't get to work on AC very much.