This was my first time using them. They are the Si- Tech quick docking ring gloves (can be removed). Lfet glove leaked like crazy & right one had a very slow leak.
No, I haven't figured it out yet. I may look at them in the morning. For the dive we did today (about 20 min) it wasn't bad at all. At depth there at the quarry (42 degrees) 20 min is about my limit for my hands before they start getting numb & cramping up.
I love those SI TECH drygloves and have used them for years with almost no problems in hundreds of dives. Only on very rare occasions have I managed to foul up the o-ring seal.
Unfortunately, I doubt you'll find any evidence after your leaks, unless you actually find loose fibers around the o-ring. On the positive side, the problems are easily avoided.
One of the rare problems is that, during docking, the excess liner might get pinched between the docking ring and the glove ring, thereby lifting the docking ring slightly away from the o-ring. When you un-dock later, you won't see any problem, of course.
Another rare issue is that the o-ring wasn't lubricated with enough spit and a dry section got bound and twisted up during docking, causing high and low spots on the o-ring, again allowing a leak.
The stock yellow polypropylene liners have excess material, so I used a serger sewing machine to trim the sides and ends of the wrist sections. I still left enough to double the last two inches over my wrist for extra warmth. To keep it from getting dragged into trouble, I tuck it under itself and keep it clear while I dock the glove ring.
As for a sticky o-ring, if the glove ring seems more difficult to press in on one side of the docking ring, I'll back it out with the doffing ring and re-seat it. Sometimes I'll even pull the glove ring completely out of the docking ring before re-seating. That usually gets the o-ring better covered with spit lube and/or gets any twists out.
Mainly, I just slobber real good on the o-ring and it works fine 99% of the time! The process just looks a little gross, that's all....
Dave C