I have a new Lazer EPS 60in.,it is leaving a path to the left of the center spindle. Most of the time this path is more of a different color than the rest of the cut but at times it leaves grass uncut or not cut as short as the rest of the path. My blades are sharp, deck is clean, tire preasure is correct. I even have tried the full foil blades and still have the mark, it makes my cuts look terrible. I checked my deck to see if it was level and it is off 3/8ths. of an inch from left to right. Also my left rear chain hangs loose and can't be adjusted any further, is this normal? Thanks for the help.