Been on a set of springs for over 20 years and agree they have a life all their own,but to hear people having such difficulty and resorting to an air-ride with a brand new bike seems a little hasty, no disrespect intended.. I'd rather go to the tool box and see if I could adjust it first.Shifter distance,brake distance, headlight beam, rear shock adjustment, handlebar and reach heights, tire pressures etc. are major adjustments that are intended to be made before one should even think of putting the old lady on the back for a good ride. Setting up the bike for your basic style is first step,and the rear suspension is one of the biggest areas,and often most overlooked areas, because it not only involves comfort but also safety (2 of the most important ) and should be addressed and your comfort can be found. It doesnt help with the lowering kit, my 97 Bad-Boy handled great until I put the lowering kit on and even with proper adjustments still would sometimes bottom out when loaded down hard but was awesome for 99% of normal riding. It took me 3 adjustment attempts around 1-1/2 hrs and my sweet spot on the 09 is 44 psi rear 38psi front,1-1/4 (equal turns both shocks) turns stiffening the suspension. I had the bike prepped with the saddle bags on with a 12 pack ( pepsi of course ) in each, me and the wife with coats and full gear ,full bag of fuel. Much,MUCH better. And for those that dont own a spanner wrench and dont ever intend to, the dealer can make these adjustments quickly and (I've heard) will do it for free where I bought from as part of a normal bike setup, I prefer the bonding thing with the new scoot myself. (brake,shift lever and handlebars also,free) If I were to start from somewhere I think I'd start with some basic free stuff before going with $$ Safety 1'st !!
Sorry so long winded but I've always considered this a highly important and overlooked area in my neck of the woods and it is something that I'd never thought would be enough to discourage others from purchasing a Springer !