Have just removed the ais from the bike and i shuold probably rejet. Open endcap (pro moto billet style),airbox snorkle removed, sea level. yz throttle stop. There was a few jets with the bike,these came in a plasic bag should i use them? 175 mj 50 pj 45 lj 110 ?? fits at nr 2 in the picture below there in no jet there now(stock) stock jets where mj 162 pj 45 60 lj #70 in the nr 1 in picture empty in nr 2 in picture What are nr 1 and nr 2 in the picture when should i mess with them?? Is this right then, the starter jet is only activated when the choke is on.