[BOBOCobra]

Thanks for the comments. Only real mod is WP bypass is plugged and I use the heater circuit for bypass.
Not a HP issue as I did not increase that much and its only the one side temp probe and its only a small area of intake that gets warm. ran it again last night and no hot spots on head. What I cant figure out is how it could push back towards the probe, yet the water neck is not hot, it should not do that, it will take path of least resistance and rad flow would be strange if it pushes backs into intake and not out through water neck. It has to be heater circuit related. Not using coolant after initial burp cycles (150 miles since then), no bubbles in overflow, not puking coolant, normal expansion and return to overflow bottle, no coolant smell in exhaust, 3 circ holes drilled in t-stat, .... i will keep trying to burp but any other ideas are welcome.