One piece of advice I can give is get a longer silicone sleeve that goes over most of your shaft. That will give a much higher frictional force on the shaft such that it is bearing the brunt of the weight, which is how it should be anyway. It will also allow you to hang heavier weights, since the device is more secure with more shaft area to work off of.
And before you ask, Bib's theory about putting a hanger attachment more toward the base of the shaft causing exclusively "skin stretch" only has been disproven, both by DLD and kingsnake, who coincidentally is sponsored by the LG hanger. If you see his videos, he has a MASSIVE silicone sleeve for his 10" dick that goes all the way down to the base. He gained 2" hanging ~3h per day with the LG, I believe. So I'm inclined to believe his methods are sound.