In the beginning you will probably feel a lot of discomfort. When I tighten the chamber in the beginning to much, I got pinched in the side of my penis. It's more comformable now.
If you have tightening the chamber what you can, and you are still slipping, re-attach after a while and/or lay a piece of
THERABAND on the attachment points in the chamber (at the pads). Sometimes when I attach, I haven't found the right attachment point on my penis for hard pulling, then it slides a bit. Sometimes my foreskin isn't pulled back enough, and this makes the penis slip in the chamber. Try to detach and pull the foreskin back, and re-attach your penis in the chamber. If this doesn't work, maybe you need to re-wrap your penis in order to make the foreskin more pulled back.
You can use the black penis wrapping tape, in order to force the foreskin back more, and make it stay that way during the attachment procedure in the chamber.
You can also re-attach a tiny bit more near the base of your penis, but still behind the glans like, 0,5 cm/0.20" more up behind the glans, and it may work a lot better.
I always press on my glans to make less blood stay there during the attachment. Less blood in the glans, less pain during your
lengthmaster routine.
By the way, I feel discomfort now as well but not on the same level as when I first started to use the
lengthmaster.