need help with my 96 wv700 this is what happened bearings in starter went bad got caught up in flywheel I pulled the motor replaced starter cleaned bearing out , while it was out replaced piston and rings rebuilt carbs pop off set to 40 ported the exhausted ports now the ski starts right up but wont rev up took everything apart again doubles checked everything and still wont rev , Do I need to rejet since I opened up the port or make pop off pressure higher ? anybody run into this after porting