gentlmen

first, thank you very much for the extraordinary answers..coulsnt being better

second, some Q? that i dont understand?

1. WOT- what do you mean by that?
2. "cut the header? - meaning to shorten the aluminum header after each try till i get the wanted RPM? kinna difficult to do at field...
3. GAP - you mean the gap btween the header and the oioe? the gap the silicon tube covers? this gap should be as small as possiable?
cant i leave the header as is, and just move the pipe forward and backwards to get the RPM's?


reagrds
gadi