When strength qualities aren't expressed in jump performance general work is often lacking. Boo feels very strongly about this. When this is the case I'd back off the really intense weight work (>80%) and up the volume of lower intensity general strength, medball, and other work.
Do you/Boo feel this is the case regarding sprints as well? Obviously there is a point of diminishing returns, but say you increase your weight numbers(bench, squat, clean, etc.) yet in your first 30m your times aren't dropping at all, do you think you can use the same criteria of reducing >80% loads and upping the volume of low int. gs, medball, etc.