I bought this FP to replace an ancient Cuisinart  processor (circa 1980) that could not be repaired.  The size--height and capacity (not too big)-- appealed to me as well as  what appeared to be simple operation (something I loved about my old DCL.  What I discovered was that the blades did not shred evenly, but I cared far less about that than I did the difficulty I have locking the bowl in place.  WHY on earth does it require so much muscle?