Yes, this is a little strange. THree or four days ago i greased the u-joints only on the front drive shaft and did not grease the slip yoke. Put amsoil grease in there until the old grease started oozing out from within the joint. Now i have the grrrrrrr when lifting from the gas at over 55mph. I didn't have it before. Surely lubricating the joints wouldn't have damaged anything? What's your opinion? Now i'm in the middle of putting on slee's castor plates. Curious to see if it's worse or better after the plate install.