dude I stick 560# of pavers in the back and I barely drop 1/2", and the 500# plow on the front as well. avatar picture is real. she rides stiff with just me, but 3 of us, all our isht for a 2 week trip to the Outer Banks, Yakima 4-timer and 3 bikes on it, and she rides great.Nothing really. Bike rack with 3 bikes, camping stuff. Its entirely possible they were packed wrong. Who knows. They are the 948. Other issue is the 927 are so stiff that the front is a little higher than the rear. These are to make it more even and project headlights down the road better.
and if you think the 927s are stiff, try the 790s! handle the plow great though.