MarkHB wrote on 09/04/12 at 09:09:34:You don't find that tightening the lock nut turns the screws? Maybe I'm doing something wrong.
No, you don't do wrong. This can occur without being anything suspectable. The threads are very well and precisely machined, so the torque you give to the lock nut can affect the bolt in the rocker arm.
A good screwdriver, a sure hand and a little training is all you need to get that done.
But the hints about the 90* flat blade screwdriver and that link to the motion pro shop are very good ( a friend of mine has those adjuster helpers in daily use, and I think he wouldn't if they weren't worth it.