Attention: TDR Forum Junkies 
You may want to check the thermostat in the front cooler to make sure it is functioning correctly. If you remove the c clip and use a butane torch on the square block the spring pressure will pop the cap and rod out for cleaning.
The only dowside is if the o-ring is bad you may have a leak unless you can source a good one somewhere. Been a few of them jam open or partially open and just let the fluid circulate aorund the cooler instead of thru.
