[Anastasia916]

Pains and tingling is normal. When I first started the ring marks lasted 6 to 8 hours. Now they go away within an hour or two, your body has to get use to it. But if you want to prevent the ring marks more and cushion the domes you can try camper's mounting tape, I have it on my XL's I didn't need it for the smaller domes, but once I went to the XL's I needed it. It works well for me. Blue tac is poster tac. You can find it on amazon, I never used it, so you would need to browse the NB forum and find the posts about it to know what they do. Some people use the NB foam rings on their domes, some use cup up yoga mat, some use blue tac, and others like me use camper's tape. Go through the NB forum and read up, it will be worth it.