HI all - need help on an overheat...replaced the thermostat last summer (with a drilled hole just to be safe to burp the baby ) and car has been running fine - today overheated to 260. Was able to limp home when it cooled down below 210 but never was back at normal upper 190's. Top radiator hose is of course hot, bottom is cool to the touch. Almost like the t-stat is stuck closed.. I do have heat from the heater...any help appreciated. 2008 2.0L GXP ~60K miles.