I just took mine down, had them rearched 1' higher than stock, & add a forth leaf. $80 each, $160 for both. Done in 24 hours... Gives it a slight rake now. Best thing I ever did....
I took my 55 crown springs to the local spring shop (champion springs Ft.Worth) they re-arched and put new pads between springs in a couple days, they also had the shakles and bolts in stock so I bought them also
Well, I placed a replacement order at JCW today. They're on backorder again. But it seems like everyone is getting the correct spring this time.