It must be being overlooked as no one has mentioned bedding your trap,I don't mean just wiggling it down like you would a rat trap, dig in a big bed for that big trap. make them step down keep that pan two inches below grade and you'll stop catching their bellies. Don't be afraid to go even deeper at steep climb outs or shallow trenches, and go easy on the waterlogged leaves one or two over the springs if you must do it. Don't get discouraged keep at it and keep track of what works so you can do it that way again and again, A little luck don't hurt either, so Good luck

If youre getting rear toe catches its because the beaver has most of its foot on a jaw when the trap fires. I use at least two guide sticks 13" apart, with the trap tight against one of them. This offsets the trap the proper amount and the sticks guide the beaver and the foot right between the jaws. I rarely get toe catches, most always the foot is buried perfectly in the trap.

Morse Obertos beaver trap basically had no pan. He probably had lots of misses but no toe catches or sprung traps do to the foot being on a jaw and the pan.

It doesnt always go as planned. Caught this 50 lb nuisance beaver today in a 3 Bridger set for a front foot. Caught everything except the toes.

It’s great when it works.

Is the TS-85 as good as, about the same or better than MB-750s for beaver and why?
Own some of each and appreciate the thoughts of the many good beaver trappers on this forum.

For whatever reason I could not explain I had too many sprung and empty TS 85's at the bottom of the drowning rod. That simply does not happen with my MB 750's so you can guess which my favorite trap is,

I can't completely answer your question because I've never used a TS-85 before. I do, however, run a few dozen MB750's each year and my experiences echo MnMan. If I have an empty trap it's because of my mistake.....toe catch (didn't properly off-set or trap wasn't placed at a correct water depth) or snapped trap in the trap bed (pan tension/night latch wasn't properly set). I can't remember ever having an empty trap at the end of the drowner rod. MB750's have made me look like a better trapper than I am many times.

I don't have any to look at but I think It has something to do with poor lock up.
I had some at one time and I had all kinds of empty sprung traps. I think they are still In some swamp In SC. LOL
There are more then a few of us on this forum that have had the same problems with that trap.

Thank you, gentlemen. Think will stick with 750s.