>>> Can the PM be used on an uncut dick as successfully?
Yes (im cut), you only need to retract the foreskin or leave it over the head. But it is better to retract it.
(Im trying something new related to foreskin regrow with this device, post here if you want details)
>>>Is it pulling on the ligs to get the gains or mostly tunica?
I think it induces stress to the cells (due constant traction) creating microtears. After a period of time new tissue will grow and fill the gap.
This link explain it very well:
>>>Is the PM less useful if you have a low LOT?
Nothing to do with that.
The LOT is used to know your ligs grow potential.
>>>Do you need to wash your dick of natural oils in order for it to grip properly?
Yes i would recommend it for better grip, but also to wrap with thera for that proposal.
But hope you wash it always, even when you don’t PE :D :D :D