In the 90s I worked for Deere. We would be sent into the field to test different items as well as repair. One of the items was head gaskets. Deere was having a problem with them leaking. We were sent to random locations in the field and changed head gaskets following the established sequence and torgue values with the additional degree value determined by a degree wheel, the last step was to adjust for stretch. The one thing we did differently from other reps was we painted our head gaskets with a cheap NAPA flat silver paint. Ours were the only gaskets that did not leak and there was talk from Deere they may adapt this method. Myself and three other techs had always followed this practice and have never had problems with it. Inexpensive flat silver paint, lightly applied, install while tacky following the prescribed method for your engine