Is the second string (E) supposed to be the thickest one in the set?
Whats up Tim. Welcome to UU.
Anyway, usually, on a 4-string tenor, the third string (C) is usually the thickest one. Just to make sure you are numbering the strings correctly: the bottom string (A) is #1, then the second string from the bottom (E) is #2, third (C) #3, & the top string (G) is #4.
I think I know why you are asking this cause Aquilla's dont make it that clear which string goes where, right? They have colored dots on the sleeves holding the strings. Check real good on the outer package. It will tell you what string is what color.
oh, btw, I have Aquila's on one of my Tenors, and the C string is the thickest. I even have a would low-G on that uke too.
Hope I helped. Aloha, Dino