As I pointed out, hip width plays a huge role in how the heavier steels hang (PST and Worthingtons). But without pictures I can only be skeptical because as @Marie13 says, non-butt plate BCs and the heavier brand steels are almost always a very poor combination. On me in a razor, my buddy in an Xdeep, my wife in a razor, there is almost no way to get the tanks high and on your sides without a buttplate. They usually hang down a good 2 to 5 inches below the plane of your body no matter how much you move the clips medially (to your spine).So you're saying worthing 100s don't work as well as worthing 85s eventhough they're exceptionally similar? Maybe for you, but the people I dive with have no issue. My wife is 5'2 and 103 lbs and dives worthing hp100s no issue at all. She typically uses a buttplate because it's how she prefers it, but has in the past dove them without a buttplate no issue. Maybe you're talking old 3500psi HP 100 Genesis, but there's tons of people that dive them without a buttlplate.