installed the red restrictor plate and change jets to a little bigger and ran 3 rounds of practice and ran very fast then all of a sudden it went sluggish, it will rev up fast then bog down and wont hit the rev limiter, checked plugs one plug was a little more rich. Replaced both plugs and now when going from idle to WOT the motor stalls, I put the stock jets back in check gaps with no luck, changed carb and same result, I can remove the restrictor plate and runs better with a little hesitation at acceleration, I am at a loss of what else to check.