CTJackster, looks like we have the same springs.
I can't tell from your picture, do you have any rubber pads on the springs and does the shock plate is in contact with the perch, do you have a spacer there?

Anybody here could tell me the multi-leaf spring and mono-leaf spring thicknesses?
I want to use the pads but can't figure out the spacer size I would need. 3 leaf springs are 1" and I know that conversion kits from mono to multi comes with a 1" spacer.
So if a mono is .50", a multi would be 1.50" and I would need a .50" spacer !?

 

Eric - it looks like there are rubber pads (of some sort) on both sides of my “JC Whitney” leaf springs, see below pics



Multi-leaf springs - rear (67)

Multi-leaf springs - rear (67) #2

 

Thank you. I see no spacer has been used between the perch and the shock plate...