so i recently replace the ap and ra bushings in my bronco. when im on the highway about 60/65+ it would shake slightly. i could deal with that. but the other day i bent my nerf bar back(yanked on it with dads tb.) well now at about 55+ it will shake on and off. we're not talking about bad shaking but its enough to annoy me. itll come and go about every 30-60 secs above 55. i know the front is good cause when i look at the hood while its shaking the hood is nice and smooth compared to the road but i feel shaking in the car.also if i look over while its shaking the passenger arm rest is shaking back and forth. this leads me to beleive its the leaf spring bushings. they are the originals, worn and cracked.the back ones appear to be off. so my question is this: would those bushings cause this shaking? it would make sense cause it got worse after my nerf bar repair. im just looking for confirmation since ive recently dumped a bunch of money into repairs (some which have to be redone cause of my stupidity:twak:smilie_slap:cry) and need to know this will fix it. as a wise man once said "parts replacement isnt auto repair:rockon". im thnking poly energy suspension bushings. these arent hard to replace are they?