Does anyone know can the x300 42" deck mount on the x500? I have a x300 with a 42" deck and the neighbor has a x500 with a 48" deck. He wants the 42" on the x500 and I want the 48" on the x300. The x300 is a 2009 and the x500 is a 2010. Looks like they can swap but wanted some other opinions...