HEY DK,THERE IS ONLY ONE WAY TO GO WHEN GOING BLOWN,AND THAT IS A LITTLEFEILD BLOWER.DONT LET NO ONE BS YOU.ALL THE OTHERS ARE JUNK.I LEARNED THIS THE HARD WAY SO I WILL SAVE YOU SOMETIME.AS FAR AS RUNNING 10#'S BOOST YOUR MOTOR BETTER BE PUT TOGETHER GOOD.I ALSO LEARNED THIS THE HARD WAY.OR SHOULD I SAY THE EXSPENSIVE WAY.I HAD A MOTOR BY BLOSDALE AND SHOEMAKER AND NEITHER LASTED EVEN LONG ENOUGH TO TALK ABOUT.IF YOU WANT A RELIABLE PIECE THAT YOU CAN RUN 10 TO 14 POUNDS GO TO CLAY SMITH AND TALK TO GEORGE.HE BUILT MY MOTOR 3 YEARS AGO AND IT STILL RUNS GREAT.I RUN 13#'S ON AV GAS ALL DAY LONG.GOOD LUCK OH YEA DONT FORGET TO BUILD YOUR OUTDRIVE IT WONT LAST I LEARNED THAT THE HARD WAY ALSO. BOATNAM1