Dilly541,
Now, the results of that test indicates to me that you don't really have a problem, the El seem to be fine. I don't think you will need the tape. What I called the locking lug, you called the "tightener/sliding tightener piece". The two "adjustable lug bearing surfaces" should do what the tape did for you.
Leave the "tightener/sliding tightener piece" loose. Adjust the headspace with the "rim screw". It may line up so the filed area gives you the clearance you need, if not, then you can deal with the radius in the rim recess. Once you have the headspace right, deal with the slot in the extractor. Then put it into the gun and tighten it. then bore sight on a target, at whatever distance you want it sighted for. You will have to have some way to hold the gun, line the sights up on the target, then look through the El. If you can see the barrel with the target centered looking through the El., that's OK. If you have a vise, you will find it easier to hold the barrels(by the underlugs, pad with leather, etc)in the vice and line the sights up with a target. To adjust it, visualize how the El will have to move to center on the target( since you have moved the adjustable lugs, put them back to about the center).Take the El out and make the appropriate adjustments. Put it back in, bore sight again, make adjustments, keep doing this until the target is centered. Sometime during the process, tighten it in, bore sight it, tighten it tighter, bore sight it again and observe how much the sight picture changed by changing the torque. This will illustrate how important it is to install it the same way every time. Once you have it centered, take it to the range/woods and shoot it, on a target at the range you selected before. This time make your adjustments according to the bullet's point of impact. Be sure to use the set trigger and a good rest. If you get it sighted in and later remove it, check the POI when you reinstall it. If it doesn't shoot to the same place, don't get too upset, change the torque on the tightener, until it comes back. Good luck.
Mike
