Thanks for anyone taking the time to help me out on this, it's been driving me nuts.
So I had a new system put in 3 years ago. And from day 1 it had a Nest Gen 3 making everything work. My setup is a 2 stage A/C + Heatpump setup and a boiler that does radiant heat as a back up when the temp reaches ~40F.
My problem isn't with the heat / two stage setup, or at least I don't think.
My problem is if I have my boiler wires hooked up during AC season (even with my nest set to cool only), my unit is turning on the AC + my boiler at the same time so I get a nice blast of heat from the radiant mixed with nice cool air from the vents.
I don't understand how this can happen, but I'm nearly 100% sure it's wiring or electrical.
I'll attach my boiler and my wire setup at the Nest. I have tried resisters, but they didn't work when I put them on the boiler side between C and W. Zone 2 is the the nest that isn't working. 
