About 2-3 weeks ago I got a small sore on the head of my penis but after a few days it went away. Then about 1 week ago 2 others showed on the left and right side of the head. It looks kinda like when you get a scrap when you fall. The difference this time was that I was wearing clothes, at home it's not allowed, and was out most of the day with friends and when I went to go use the bathroom it looks like pus around both sores. When I got home I took the cage off and clean it up and started applying A+D ointment and have left the cage off until it heals. So far the left side is mostly healed the right still has a bit of a scape on it and still tender. I started locking up back in beginning of Jan of the year and is this is the first time this has happened. I've read on here and another chastity forum about people with some kind of irritations and it was suggested to use ultra fine sand paper or the alike to smooth out the inside of the cage. The only even slightly rough spots are some circles like where it looks like the plastic was poured, which I guess could be the cause but hard to tell since like I've said worn it for almost 2 months and then it starts happening. But I'm also worried that if I try to sand it it could make things worse because I don't see how it could ever be perfectly smooth without something filling the sanding marks. From as best as I can feel while I can see the ones on the left side they feel smooth but there is a few on the right side that is raised enough to just barely feel something.