Same problem here, but not as drastic, just have to really jam on that grease gun! This is one of the things I had considered in the new bushings we are fabricating right now. One thing I thought about was machining grooves into the outside of the bushings both around the diameter (maybe 2-3) as well as along the length of the sleeve (maybe 4-5). With enough pressure applied they would allow the grease to be "chanelled" between the bushings and the idler arm bore. My only concern was possibility of increased wear due to the grooves, so I decided against it right now. Just have to see how the new material goes for the time being and hope that does the trick. Only a couple weeks to go and they'll be ready.