I do have the hose that goes into the fluid of the reservoir.

working on flushing that crap out.

I have suspected a head gasket leak in the combustion the whole time.

going to get some more flush product, follow royster's lead, remove the radiator and flush and back flush, get some hose to replace that reservoir hose, still going to follow geezer's advice and find a replacement cap and reservoir, but I did some reading and a leak in the system would cause the return hose to collapse and not pull fluid into the system. If it's a combustion breach, it pulls fumes from the breach when the system swells.

After cleaning it up again I will install another new thermostat and cap, new hose to the reservoir, inside the reservoir, and hopefully find a cap tomorrow. See what happens. If it's still not right I have an appointment Wednesday with a shop to do a pressure test and a dye test to confirm the head gasket issue. I really appreciate all the input, from everyone.