problem with install of bagger

[Buckie]

Morning, all. I just purchased aCC ZTR (50). Got a leaf/debris bagger for it, too. I am having an awful time getting the pre-molded plastic chute to fit down over the deck (on the operator's right) where the instruction manual says it is supposed to fit. I changed the part out that holds the chute, per the booklet. Now, I can't get the chute itself to fit. Also the spring-loaded existing debris guard (the "flapper", as we call it). does not fit back down over the chute exhaust. I must be doing something wrong??? help, please.
also, the handles/levers for steering appear to be uneven. I am going to adjust according to the directions. will this present a problem?