I need to make a choice between the EFI Kohler or watercooled Kawasaki on 60" Exmark. I already have 1 w/ carb. and 2 w/ EFI and need to buy another and dealer is running special and can get Kaw. for 300.00 less. Has anybody had problems with radiator set up? I like the EFI for the fuel mileage but may be willing to try Kawasaki.Thanks for any help,and yes I did search but didn't find what I as looking for.