Upgrading the pump helped marginally, but added a ton of noise. Bringing the pump back and just going to use the smaller one. Added a dual nozzle loc line for the return. That appears to have had pretty much the same impact as a pump upgrade. Additionally, pointing one nozzle toward the surface and one down into the tank has created surface agitation, pushed more flow through the middle of the tank, and if the return pump is turned off the surface nozzle will break the siphon and prevent the lower nozzle from continuing to pull water into the sump.