so for a while ive been overheating and i found i needed to back the screw out and let it run to let the air out. I did that and i realized why it had overheated before. Well it was about 7 months before it did it again. When it was nice and cool out??? it had just passed the middle mark and i knew it because it did it before. I shut it off and the temp kept going up all the wait to just before the line under the h. Started it up and it droped back to normal temp. Im wondering if maybe my tstat is being stupid sometimes and and thinking about gutting it and seeing if that stops it. I feel it is loosing coolant which im thinking was only because i had just shut it off and found my overflow at the minimum. The first time it overheated that thing filled up and i just left it and bled the system and put more in the rad. Do it or dont? Not sure if these heads are bad about going bad when the over heat. im hoping not i mean ill throw new head gaskets on no problem but i just wanna avoid having to do that cause i got my timing belt almost due and this tax return its getting new timing belt kit and every seal on the motor and a distributor. I plan to keep it for a while. I can get my heads redone for 125 and new gaskets too if i should. Which i might do anyways. I just want this ready for college i cant have it breaking done due to neglect so im gonna take care of her lol. But the tstat? Do or dont or other suggestions?