Even with new blades it doesn't really mow nice leaves two strips and in middle seems there is a 7 inch strip that's looks a bit lower

Put mower on a level concrete slab and get a tape measure and check to make sure all blades are the same height off slab. Something is bent. You know its not the blades it may be deck etc

[QUOTE=dogdeville;3145719]Put mower on a level concrete slab and get a tape measure and check to make sure all blades are the same height off slab. Something is bent. You know its not the blades it may be deck etc[/ QUOTE]also make sure your center bladed is bolted on right your washier may be backwards