CB Range discussion

I have a query regarding what I’m going through. I am using what turns out to be a Chinese imitation of the authentic CB-6000. From my experience, prices that seem too good are often just that—too good. My issue is intense burning and pinching behind the scrotum caused by the ring. Forum members have mentioned that these Chinese imitations come with rings featuring a groove which can catch skin, leading to pinching and chafing. Mine has this groove (unlike genuine CB rings), so it sounds like I am dealing with exactly that problem. The sensation is quite intense at times, making sitting, driving, and sleeping difficult. A couple of times now, I have considered asking for release while we sort things out. With only three days into my forced chastity journey, I’m getting worried about the health of my scrotum skin. I’ve been applying silicone lube multiple times a day; it helps somewhat but isn’t solving everything. Has anyone else experienced this with Chinese CB-6000s? I’ve read that some men wrap surgical tubing around their ring or use gasket material to fill the groove. Side note: I ordered two larger rings for my CB-6000. Right now, I’m using the largest 2-inch ring, and the pressure is almost unbearable. I have more excess skin on my penis and balls than most guys, so I hope these bigger rings give me the room I need while keeping everything securely locked in without any chance of escape. These new larger rings come directly from the CB manufacturer, meaning they are solid with no groove, which should hopefully stop the burning, pinching, and chafing. Thanks for any info!