Gentlemen, I am experiencing rather frustrating problems in getting my Lehman set up. I just finished the construction, and am now trying to get the boom to center. The boom is setup so that it has a VERY slight downward slant from level. I have leveled the base plate and it seems that no matter what I do to the leveling screws, the boom either performs a major swing to either the right or left. It takes almost NO turning of the leveling screw and the boom will go from a center of about 30 degrees to the right, to a center that is about the same except to the left. It seems as though I just can't get the darn thing to center up. I know a lot of you out there have built the Lehman, so I'm hoping that maybe someone can give me some assistance. Please help if you can.... Jim D. Martin New Haven, Indiana _____________________________________________________________________ Public Seismic Network Mailing List (PSN-L)
Larry Cochrane <cochrane@..............>