I AM NEW TO DRIVING A MOTORCYCLE ..ALWAYS BEEN ON THE BACK HOLDING ON FOR DEAR LIFE ! I HAVE A 1978 HONDA-MATIC 400 AND WOULD APPRECIATE INFO. ON IT. WHAT IS THE RECOMMENDED SPARK PLUG GAP ? THE BIKE HAS BEEN PUT BACK TOGETHER BUT STILL NOT QUITE RUNNING RIGHT.IT STARTS, RUNS, BUT WHILE RIDING DIES OUT HERE AND THERE. SEEMS LIKE WHEN IT WARMS UP IT GETS WORSE.AND IN STARTING IT HAS BACK FIRED A COUPLE TIMES.DONĀ“T KNOW IF IT WAS DUE TO USING CHOKE AND TRYING TO START IT? IT DOES NOT BACK FIRE WHEN IT BEING DRIVEN.I WOULD APPRECIATE ANY INFO. THANKS !