Not sure that matters much. If the fuel can negoatiate the baffles
then I suspect the crud can as well. Hence the problem. Once the
fuel is shaken not stirred 
 
Doug
"LaBomba182"  wrote in message
...
 Subject:  Fuel transfer/polishing pump
 From: "Len Krauss"
 That works.
 Only if your tank has no baffels.
                           Capt. Bill