Hey guys, I was doing some pump testing for my Belleau Wood today, and had great results. The pump was a small BC pump (not the micro or large) . With no restrictor at all, using a 7.2 volt NiMH battery (charged to 7.8 volts) it was able to evacuate 3 quarts of water in about 20 seconds, which is far too fast for our purposes. With a 1 unit restrictor, this evacuated 3 quarts of water in about 40 seconds...also too fast for cruisers but perhaps close for BBs and BCs. When I switched to a 1/2 unit restrictor I was SPOT ON down to the second for my 3 quarts per minute (.75 gallons per minute), and was able to repeat this several times. So, for guys looking to go with a .75 gpm pump and running 7.2 volt systems, this might be just the ticket.