I was just installing a K&N power kit on my 01 scrambler. and I noticed the jet that the instructions says for me to use is smaller than my stock jet. my fourwheeler came with a 155 the instructions say use a 150. I have stock exhaust which one should I use

 

I just put the stock one back in I replaced the needle at the top of the carb. it will still idle but cuts off when I give it gas. I have not adujusted the fule mixture screw bc I dont know where it is located any help is appreciated.

 

just took it on a test drive doing. it is running like normal. I guess it just needed to be drove to get the gas flowing again.