I prefer to wait two weeks between a compressor refresh and valve block rebuild.

 

Ok, yea that makes sense. I still dont understand why just the front end is dropping even with the fuse in.
But no other suspension fault since recalibrating.

 

Because you have a leak at a strut(s) or valve block, which then leaks into the gallery which is not 100% air tight. The system only adjusts at hour 2 and 6 after the truck is turned off. If the reservoir is depleted on the first fill or gallery pressure is not sufficient when dumped from the reservoir you can still end up with a drop. Or the system did actually adjust those two times, but after hour 6 the leak may be sufficient for it to continue to drop. Either way a significant drop is a leak. A minor drop may be cause by a temperature change in the bags, parked when hot outside and then cold overnight temps, for example.

 

Well im pretty possative its the valve block. Before it started doing it over night i pulled the fuse several times to see the results and the whole front drops. I plan on rebuilding them. And really it only drops over night like that on warm days and cold nights like you said above so hopfully thats the issue.