LT 180 running rough left cylinder very lean.

[Hammermechanicman]

You don't need one to set valves. I am one those blasphemers who sets valves by cranking engine till one valve is open then set the other one. As long as the lifter is on the heel of the cam it works. Some folks get their panties in a bunch and feel society will collapse if valves are not set at TDC.