They've been checked previously (torque to spec) but have not been checked in the last few months. The noise did seem to present itself after installing the Spacers. I'd emailed Greg about it, but he said he'd never heard about any noise after installation... Not saying it "is" the spacers, but I was curious that with compressing the subframe with the spacers, I was curious if I could have "adjusted" something else somewhere when I installed them... Sways are on the tightest setting on the front and tightest on the rear I believe as well. But I haven't checked the bushing brackets/endlinks in a while.