Another air strut issue

[TheClaw]

A couple of years ago after much pain and confusion by my local German car "expert" we found some issues with my front air strut system. Replaced the compressor and the left strut for $$$$$. Later as the right strut gave way, I realized how easy it was to R&R myself and picked up a rebuilt one from Arnot for half the price of the dealer strut and had it replaced one Saturday morning before lunch.

All is well until recently both sides are compressed in the morning when I come out to the car. when I open the door the system kicks in and both sides inflate. Im guessing there might be a leak in the air line from the compressor to the front system. Any suggestions on where to look or other possible causes?

It's a 2003 4.4


Thanks,
Jeff