That "Cam follower" is the solid lifter,non adjustable..that is why you grind the valve stem or lap the valve down into the seat to get the proper clearance..and a light touch on the valve stem will save a hell of a lot of agravating work with the lapstick...but there is always the electric drill...
The lifter shown in Tonys posting seems to have some kind of adjusting nut on it...not sure about that..
