Struggling with Stealth Retainers/packers and repeat injuries

Hey community, looking for some help…

I’ve been restoring just about 4 years now and I think I’ve just about reached CI-7, full coverage when flaccid. I used purely manual methods 2 and 3 up till the 3.5 year point when I decided to get my first device. And after some research and reviews, notably by u/spiritfu, I decided to try the Stealth Retainers extended ptainers.

Initially I had a great experience and was able to wear all day with no issues. But now, something weird is going on. It’s still perfectly comfortable for me to wear all day, going on 16-18 hours, but after only a day or two I notice small tears that have shown up and need to take off at least a few days to let them heal. But the even weirder part is that the tears are showing up around the scar line and/or back from the scar line on the “outer skin” portion, even though I’d expect tearing from this device to occur on the inner skin since that’s where the majority of the tension is being applied.

I’m fairly certain I’m not using a packet that’s too long for my current length (20mm).

Anyone else experience this or something similar? Tips or tricks to help prevent these injuries?

Thanks in advance everyone! KOT