So, I've got this set of 14" 8-lug COB top/bottom stick savers for a snare drum. I'm currently working on a new snare drum build for personal use and was hoping to use these hoops on it. I had used them on a different drum before and had also problems with the tension rods lining up with the lugs, but always had figured it was the shell or the lugs that were the problem. I actually had to file down the base of the lugs to get it all to line up properly, and even then it was a tough fit. But this new project is reaching the final stages, and when I put it all together just to see how it was going to look, it's seems like lining everything up is going to be a problem once again. And since this current build is not using self-aligning lugs, this might be a deal breaker.
This morning before I left for work I grabbed the hoops and a tape measure to 1, make sure they're flat and in-round. No problems there. And 2, to check the spacing between the holes. As I said, they're for a 14" drum, and the spacing center-to-center between any opposite holes is 37.75cm. I also compared the nearest 14" hoop I had from a different maker (Gretsch), and the spacing there was around 38.25cm. So a half a centimeter difference, give or take. Or a little over 3/16".
Is this normal for Slingerland hoops? Were their shells undersized too? I've never heard of this before, but that's the only reasonable explanation I can think of. If all the hoops are undersized but the shells are not, that means we should see "outward splay" on Slingerland drums, no? And I don't see that.