LO.....I have built quite a few rods on Tiger Eyes. I've found (and I think others will concur) that the Tigers are somewhat under rated when it comes to weight ratings. They also are stoutly made and their butt sections are larger in diameter than most comparable blanks.

I'm not saying there is anything wrong with the above , you just have to be aware of it when purchasing . In your case you stumbled on to it ,and found out by increasing a line size.
I'm glad the rod is not a closet dweller any longer...Enjoy it and go catch some fish...Ed