Looking for a replacement vertical output transformer for Admiral 20Z1

[rca21d645]

Here's a photo of what I'm getting on the tube. Audio comes through though, albeit a little weakly. I tested the height and linearity pots, replaced all the paper caps in the vertical, and tested each resistor and replaced the ones out of spec. I'm 99% sure the transformer is what's causing the issue as I also didn't get the proper values when testing it with my ohm meter. I also swapped the 12AU7 tube (which tested as good) with another good 12AU7 and that changed nothing.