Could not even get the medium lid over my head. The XL felt good and the L was tight. So I went with the L for the very reasons you all have mentioned. I just find it odd that it would fit fine for 5500 miles and then over a period of 2 weeks (500 miles) start causing problems.Maybe you should try one size smaller to begin with, and then with compression, will still be a good fit?????
I have emailed Fulmer concerning this and will see if and how they respond.