Hello guys i have a question regardless my gtx 970 on the back plate there is screws on the plate of the gtx should i tighten them or leave them as they come i didn't do anything i have asked you about it in order to know what to do if should i leave them as they are or should i check them to see if they are tightened enough i think that they are the screws of the heatsink where the thermal paste are and to let you know that my gtx 970 while gaming the temperature goes up to 63 degree after 1 hour on my screen that is a 1366x768 resolution so i think that the temperature are good and thank you very much