Hi I'm looking to buy a RSD 54" I've talked to my local dealer and I am waiting for them to get one in stock already waited a month and may have to wait another month apparently there is a shortage on the Kawasaki engines they did have a 48" RSD come in and I noticed the deck had the bottom bar removed and the rib across the top just wondering if the 2018 54" is the same any information on the 2018 model changes would be great