the lower rod on my sport is very hard to pull from the middle rod. it took me an my son to get it off an it took five minutes. that was after a water hunt. when we got it off ,I cleaned everything, put the rod back in. the next day I tried to pull the rod off again just to see if it would come off easier. well I never got it off, because my son wasn't there to help me. my question is is there anything I could put on the rod like some kind of oil that would make it easier to come off. or would oil or grease just make it harder? I'm getting an extra coil for my sport an I would like to just put the other coil on a extra lower rod, instead of taking the coil bolts off every time.