Last round of fert I heard a hesitant ginding sound. Not often, but still was not right. Inspected the machine today and this is what I found. Both wheels were rubbing on the inside of the machine there was a shiny ring on the metal surface. My question is where would you go from here. Can you get just the case? I ordered bearings from pg thinking that was the problem before I found this. Are these hub bearings? Last is there bearings inside the case. I took a pic if that metal ring coming out where the axel enters the case. Suprising the axel doesn't have much slop, but the side that didnt get ate away by fert does have some play and thats why I was curious of there was bearings inside the case. Thanks, any help is appreciated. First year owning this machine and def ripped out that plastic that was on top of the case.