I have a small niggly issue with my XL650

Im loading 9mm's with 3.6 grns of powder which is almost a full load (New Gun)
when the shell plate indexes a small amount of powder flicks out of the cases in station 3 and 4
not enough to cause inconsistent loads (only 1 or 2 flakes)
But it does make a Mess when loading 200~300 rnds.
is there a way to slow down the final part of indexing to eliminate this.
If i slow down the handle movement it has no effect on the shell plate at the end of travel
what i have been doing is placing projectile in station 3 as shell plate is lowering to manually stop the shell plate fast travel and powder issue but its slowing down my loading time

any input would be appreciated