Anyone notice how much crush/flexing there is at the rubber bushings? Or, is it advantageous to have this much flexibility? I would have thought there to be much less and have noticed this since installing it. I would say I have more than 1/8" at each end. To rule out a couple of items, I checked each bolts and brass sleeves and all look new; this would include the bracket holes. Wondering if poly bushings would be an improvement, or, leave as is? Thoughts anyone?