the pictures will go along way to starting to work out which end is causing the problem or wether both are at fault
this is the front of my 30 pickup an it rides smooth as.
http://i290.photobucket.com/albums/l...p/P1020457.jpg

notice I only have 4 leaves in the front spring, and as they have said above, some photos that show similar in yours would be helpful
look forward to being able to assist.

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