I recently bought a used snapper mower had a few issues got the motor running fine but the drive wheel seems to be slipping. was wondering if it has the right drive wheel on it cause the hole in the middle seems to big and does not fit tight on the transaxle hub does anyone knoe if it is suppose to be lose or did someone put the wrong wheel on this thing. if it is the right wheel is there a way to adjust the thing any help would be very helpful. Thanks in advance, Franco