Chuck Pat if he, you, just gets a tag axle logic instalation that combined with the void of any essential aux air accessories on the house side on your conversion even if u can't keep aux air up it won't matter. Only run the aux air compressor just before start up for the belts.
And Pat full timing like u do makes it even harder to get more airtight. A nice quiet garage makes a way better environment for this task. U will need dead calm out in the country or the ultrasonic pick up wind and wind also blows away bubbles and champagne bubbles r not allowed to icubate and expose the very small leaks.
Let's say u r going down on 1 corner an 1/8 to 1/4 in over 24 hr. In a week that's a observable lean but a tiny leak. That's a very small leak that only if soaped up good and directly over hrs of time will develop very small mound of tiny bubbles " the champagne leaks" . u would be lucky to find that with a breeze blowing away and drying out the dousing and then other normally occuring sounds.
Get the 3 corners of the suspension air tight and install tag axle logic then just do the best u can with aux air leaks.