I need some help diagnosing a problem that recently popped up with Woodstock. Since I’ve owned it, the running temp has been rock solid at a needle width under the 210 mark. This is always the case no matter the outside temp. Recently, this has changed. Now, it runs at the same mark for twenty, maybe thirty minutes until a red light or slow neighborhood driving pops it up to around the 225-230 mark. Typically now, my Mike’s Fan comes on as always and the temp will begin to drop, but, never back to 199-200 or so. Close, but not all the way back down. It always stays above the 210 mark now. I checked the coolant levels, pressure caps, surge tank, etc., and all appear to be functioning fine. Since I’m running the AC on “Max” all the time, the slow speed on Mike’s Fan is always on. I suspect this may be a thermostat problem, but I confess I’m stumped. Any ideas?