Policy Based Routing needed?

I have two broadband internet providers… VZ and TMO.

I got the TMO G5AR earlier this year, because VZ has really started throttling.

I have connected the WAN port on the Purple to the G5AR via ethernet.

I have setup Multi WAN on the Purple by using WiFi on the Purple to the VZ box WiFi. It is set to Failover.

I ran network diagnostics on the Purple, both WANs report no errors.

For some reason, from the LAN side, DNS isn’t resolving URLs at all with the TMO as Primary. With VZ as primary DNS resolves correctly. I can access the internet with no problem from my notebook via WiFi on TMO.

Am I missing some required setup to handle the G5AR?

It is my understanding that Policy Based Routing might be able to work around the issue.

I assume you could route LAN port 53 calls to VZ, bypassing the issues with TMO.

Failover working would be great, but balanced would be even better.
How do I do that?

Thanks

Dennis