Cutting A833 Input Shaft Question

Exactly what Mcodecuda said. Mock it up with all YOUR parts and see what YOU need to do. A gap..?? Mesure and trim + a 1/16” for clearance. Everything rotates with out rubbing leave as is. Any other method is only a guess. Too short you start over with a new input shaft. Too long you do the job twice.Swingn’