I havent been able to get my extruder fan to work much. I’ve gotten it to intermittently turn on in maybe 2 builds when it’s supposed to be on all the time and half of those times it seems to be blowing backwards the other half it was blowing right. I rechecked and it was mounted the same as in the instructions. I try sending M106 S255 and get nothing. I try manually starting it by spinning it myself and that has worked once. I checked all the connections twice and it still doesnt work.