Just curious as to what kinda horsepower you split second 670's are running ?
Also what are your carb settings. ( main jet & pilot jets) as every thing I have read jetting seems to be all over the place
Which side should have he bigger main jet pto or mag ( lots of conflicting info out there)
Mine has oil injection removed K&n filters, split second pipes,
Jetted for valemont elevation mine has 500 pto side 470 mag side with 45 pilot jets running avgas and amsoil
Also did all the racers edge bulkheads say racers edge along the tunnel sides ?