<PRE>Jeff:  I have about decided to add the blower--however I require the 12v variety.  Thank you for your offer though--I was about to take you up on it until you mentioned 24 volts.  For what its worth, I will probably also add a shutoff valve--possibility the one from Top Flight Services.  After a 4 hour flight over the weekend in my LongEZ I am reminded how I hate cold air leaks in the winter, or at high altitude.  And thanks to everyone else on the list who responded to my blower query--now does anyone have a TSIO-550-E for sale cheap??  paul