Strange pain issue... Need some advice?

I might be giving a bit more detail than needed, but I believe having extra information is always helpful. So, I wore my jailbird for four days with absolutely no discomfort. Seriously, it was incredibly comfortable! The first couple of nights, I went to bed without underwear. When I woke up, there was just a TINY amount of ache in my testicles. I put on some pants and headed off to work. As the day progressed, that discomfort grew. It felt like pressure on my balls was slowly building up. By the time I got home, I had to take the device out. I also noticed that the pants I’d been wearing were pulling the device in various directions because there wasn’t as much room in the crotch area as I expected. I left it off for the night and woke up feeling pretty good again. I gently checked around, and everything seemed back to normal. During my shower, I gave everything a thorough wash because I wanted to be squeaky clean ready for kh. (Who knows when luck will strike? She might want to play anytime!) After dressing carefully, I headed out the door. While driving, I felt GREAT—thought I was fully recovered and that it had just been an odd wear issue. However, after about three hours, I started feeling strain and discomfort again. I removed the device around 11:30 AM—it was quite sad to do so. I stayed out for the rest of the day. Got home around 7 PM and messed with things a bit, but nothing conclusive yet. I’ve emailed William at MM a couple of times, and he’s been WONDERFUL. He suggested decreasing the gap size among other things. It sounded reasonable, but there is one more piece to consider. When I got home tonight, I thought—put on the base ring and see how it feels. That should tell me if the pain comes from the gap or cage pressure. Guess what? After just a couple of minutes, fatigue and pain started creeping back in. The uncomfortable feeling seems to be originating from the bottom of my scrotum/balls. Has anyone else experienced something similar? I was quite surprised because, as mentioned, the first four days were wonderfully comfortable. Could the base ring be too small?? It’s not overly tight, and usually, it hasn’t caused real pain… Am I rushing things a bit? Any input would be GREATLY appreciated! Thank you so much!!