My disposables (Dry 24/7's and Abena M2/M4's) aren't fitting right in the waist. I'm not sure why not... They're incredibly loose in the waist, but when I do the thighs, I almost get them too tight. It's not a huge issue, I can just hold them up with my underwear and not have a problem, but I'd prefer they be nice and snug.
Before the suggestion comes up, I did get the right waist size, I just think I'm doing something wrong with the tapes.