Forum:DLC Level Scaling?

Hello, Just wanted to ask something.

I just finished playthrough 1 then I finished the zombie Island DLC. And at the end I was lvl 41. When I fast traveled to t-bone junction the enemies were all lvl 35ish.

My question is: can I somehow rescale the enemies to be more challenging ie (to be at least lvl 40), or should I have waited until I was something like lvl 42-44 to first go there.

Perhaps there is already a topic that explains all this and if so Could some one point me in the right direction.

Thanks