I bought a pair of die cast hoops ( Dixon) to fit on my Ludwig Black Beauty. Fitted the top one Ok, although I noticed compared to the triple flanged hoop it was a bit trickier to get the lugs in tune with themselves. I assume that was due to the greater rigidity of the hoop. However fitting the die cast the snare side hoop drove me nuts! I have the original Ludwig Weather master reso on there. Despite several goes at trying to get the lugs in tune with themselves they were still not as good as I would have liked . I totalled loosened all the lugs several times and started over , doing the usual process of opposite lugs etc. The hoop is not warped or out of round as I checked both of these factors and the drum is OK as well. I assume it has something to do with the thinness of the reso head . Is there a technique that I'm missing or is it just a case of perservering?