Not long took over my sons mower Honda HRU216. I bought some blades from GYC which they termed workshop blades, they weren't in a kit just free? They are all the same shape but the manual states that two should be different. They all have less of a bend upwards where the old blades have two of the blades with more of a bend in them. The question is, will it matter if I use all with less of an upward bend in them? Will the grass still enter the catcher correctly? Thanks for any comments.