"New" as in NEW, or new as in "reman"?
What is your idle speed RPM in neutral?
A 1993 200 might be equipped with a shift-assist switch, if so it needs to be tested.
Why the complete new lower vs. A fresh gearset in the original gearcase?
The mechanical (within the gearcase) causes for a hard shift are; improper shimming/backlash, bent or twisted shift rod, damaged shift cam, bearing carrier not fully seated, water in the gearcase.