LFGSS Summer Jersey (Sharkpits)

The first one I bought was a large....

... But I had to swap for skydancer's medium. It required less alterations. I might be wrong as slightly more bulky at the moment. But if I'm wrong I'll just impose the extra onto bothwell for the large.
I recieved a medium from Triton with my Ti frame. Looking at the chart. Probably about the same size. I cant even get it on me.

Are these Mediums wider? or do they streatch more?

Serious question.
A) I want one
B) Being 5'7" and a XL means most jerseys come down to my knees.