Yep, I thought about that, but could find absolutely no differences in the other limiting factors between the 16K and 18K GVWR chassis's -- only the spring deflection rates were different. That's why I thought "helping" the springs would come close to or actually equalize the two platforms' payloads. Additionally, remaining within the 16K GVW is nearly impossible to attain and still be reasonably usable.
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Joe Corry
COL, USA, Retired
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