<object style="height: 390px; width: 640px"> <embed src="http://www.youtube.com/v/ueZ6tvqhk8U?version=3&feature=player_detailpage&start=19" type="application/x-shockwave-flash" allowfullscreen="true" allowscriptaccess="always" height="360" width="640"></object> 1983 R100RT I pulled my heads, pistons, and cylinders. These leaves four studs on either side. On the left side, or the shifter side, I can flick each stud and hear a twaaaaang sound. On the right, rear brake side, I flick three and hear a twaaaang sound. The fourth stud is the bottom stud closest to the front wheel. That stud doesn't twaaaang. Instead, I can screw and unscrew it by hand. I also can feel inside the case and touch the end of the stud. The other studs seem to be installed into blind holes instead of through and through. Does this sound out of the ordinary?