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Message: <blockquote data-quote="Auburn" data-source="post: 1369103" data-attributes="member: 5661">The shock was still too heavy for the trailer, but the good thing is the Progressive has two springs in it (80/120) which is their lightest springs.  Re built a shock compressor and removed the 120 spring.  Now it sits down about 1.5" from fully extended while it is unloaded.  I am hoping that when loaded it will compress to the point some air will be needed to carry the weight.  Worst case, I could put a pair of the Bushtec air shocks on which have no springs at all as they are the same length when both are extended.  I prefer to have the spring carry some of the load and use the air to fine tune the suspension.Next steps are to get it weighed and through the State Patrol licensing.  Then lots of road testing.</blockquote>