Don't know yet as they're installing our TA Tri-Glide now, but, I thought there was a line on the shock showing where it should sit with the bag aired up. Don't know. I have experience with MorRyde, but not TrailAir. Surely your ride can't be any worse than a ridgid pin box. We've towed ours with the ridged LCI box for 600 miles so far, and it sucks to say the least. Had a MorRyde on the last fifth wheel we owned, so never knew what the standard pin box towed like until now. We keep looking back to see if it broke off yet.
John and Rebecca Dickson
Emma-7 / Little John-5 / Iva-1
Full Timing Again, Rev B
2013 Ford F-350 Lariat CC LB PSD
2015 SOB TT - With OC's Awning Poles (#8)
At least in Heaven, RVs will be perfect, and I won't have to keep fixing them.