Just finished adjusting the valves. I used one of those lifter wrenches from Speedway Motors. I had a difficult time at first, the tool kept slipping out of the holes in the adjustable lifters. Check out the pic, it shows what I put together as a tool to help hold the lifter wrench in place, simple but effective. Hope this will help any one else who may have the same prob with lifter wrenches slipping out of position...
valve.jpg