What do you think about using the Marauder baffles in the Rainstorm?Some guy on the yellow already did so, and said it worked out well for him.
Sniper that is another option. Pirate, what is the resivoir cap for your rainstorm? Also, what are the main differences between the rainstorm and blizzard long/short. Just looking at them the firecontrol is the same as well at the res, but the barrel/shroud assy is different.