New here, and new to ownership. Bought my son a savage 64lr .22 for Christmas. He's only put about 50 rounds through it, but I've heard this can be a dirty model and figured it due a cleaning. I read all the instructions, watched a number of videos, and I'm fairly confident I can clean this thing without much trouble, BUT, no matter the tool, the force, I cannot budge the front stud! Help! TIA