if the right side of the radiator is still cold when the temp is that high, your thermostat has not opened. Did you fit it the correct way? Not bleeding it correctly will just result in overheating, will not change hose feel. Ok, do this open the radiator cap, and ensure the coolant level is at COLD level. Then open bleed screw and listen if any air hisses out, also the coolant level will drop. Then top up level to COLD again, screw in the bleed screw a little not all the way. Then run the engine and rev and hold at 3,000rpm. Also before turning on the engine turn the heater controls to fully hot and fan speed to setting 1. Add coolant to the reservoir as the engine needs it. Then if the thermostat is opening correctly, the upper hose should be hot. Take a look inside the reservoir and see if coolant is returning from the top section of the reservoir down to the bottom.