air compressor acting up

Hi I have 2016 Cascadia, isx 400, 10 spd, 339k miles. Air compressor has been acting up here and there. what happens is the compressor will turn on and purge in a 45 second cycle, even though the tanks arent low. it does this for a period of time. maybe hours? and and it stops. it will then sit at about 128 psi like before only turning on and purging every 20 to 30 minutes(I do have a small leak that needs to be addressed). last week the blue airline broke and I replaced it and also I got the engine cleaned at a beacon. idk if that's relevant but maybe that's a clue?? What do you think I should do

 

An air leak isn't considered to be a danger by the DOT unless your system is losing 4psi in 60 seconds while holding foot valve at 90 psi application or more. But yes I understand it needs to get fixed and it will when I go to the dealer tomorrow. I'm just trying to understand the seemingly bigger problem at hand before I step into the dealer. Theres a lot of videos online about changing these parts but not a lot of diagnostic material