GregG, JimW Today at BSC8 we hooked up the last of the HEPI actuators, mostly went off without a hitch. Greg should be posting our dial indicator shifts shortly. For future reference, making vertical adjustments to the horizontal actuators can be made with a small bottle jack. Just place the jack on top of the HEPI base clamp and put the top in contact with the underside of the actuator "shelf". After the actuators were hooked up, we went inside and looked at the level of the optical table. Need to confer with Hugh about the results, but it still looks pretty good. Could be as good as no more than a 0.1 mm difference across the table. I say "could be", as the measurement was a little difficult to make. It's hard to read a moving ruler through an auto-level.