I really like 95% of the Sawyers mod is but I dont like the reduction in level cap.

Is there anyway to disable just the level cap shrinking?

The level cap shrink is just when you take the Logan's Loophole trait. If you want to put the trait's limit back to 30 from 20, you just need to edit it in the G.EC.K. and change it back. You could also open it in FNVEdit and just delete the entry for that trait in his mod.

Josh changed iMaxCharacterLevel to 15 which, with the DLC, gives you a cap of 35. So change that setting back to 30 (and then you'll have your level 50 cap back).

Gameplay > Settings

I must have mised that while looking through it in fnvedit.