Pace 5286ac, U-Verse, and my own router

So I got U-verse installed last Friday and have run into some issues with setting up my own router (google wifi pucks) with the Pace 5286ac.

Background Info: I have 300Mbps plan with the dvr and two wireless boxes for tv. After the tech left on Friday I did what I had previously done with the Pace and set my google wifi Puck into dmz+ mode with the WAP for the wireless boxes direct connected to the pace. This seemed to work at first, both tv and internet were good... until I ran a speed test and noticed I was only getting 50 down and 150-200 up. After some googling I found that this was caused by the 11.1 Pace update which broke dmz+ mode. I followed the solution here and was able to get max download and upload speeds again. But now the wireless and dvr boxes freeze every 10 seconds or so or just flat out don't work and keep restarting and trying to connect. (I imagine this is because everything including the IPTV signal is being forwarded to the google puck?). I attempted to switch everything back to the dmz+ setup so I could at least watch tv until I found a solution but everything is flakey now and at this point I may just restart everything from scratch.

So my questions are:

1. Has Anyone successfully set up their own router Pace or NVG 599 while allowing uverse to continue to work?

2. Is there specific ports for uverse I should leave off TCP or UDP maybe?

3. Does the NVG 599's IP Passthrough work better for my solution?

4. Should I flash the pace back to the 10.7 version so that DMZ+ works at max speed?

5. Is there something blatant I am missing?

Let me know if I left any info out that is needed. I also am not home right now so won't be able to test until later today.