Screw them into the block only finger tight. Install head, install washers onto the stud, put the nuts on the studs, tighten them to the specs in the manual. I believe it's something like 90 with assembly lube and 120 with oil. Also if they are new you might need to go through a tightening process with them. tighten to X pounds then loosen, then to tighter to X pounds again then loosen. im not sure what X is and the number of times required but there is a process to it. have the manual? if the studs are used then this process is not required.