Do yourself a favor and scrap that Trailair and get an E Z Flex. There is a current post on here about a Trail Air ripped apart. Not the first post I have seen on this forum of their failure.
I wouldn't think that it would be an issue for you to loosen slightly and move over. Current and previous rig had locating pins on top of spring that allowed some movement.
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Thank A Veteran
Native Texan
2013 Prime Time Crusader 330MKS
2018 Chevy 2500 D/A Z71 4x4 Offroad
2006 Holiday Rambler Savoy 33SKT-40,000 trouble free miles-retired
2006 Chevy 2500 D/A-retired
2013 Chevy 2500 D/A-retired