Hi all,

I just picked up a nsr150 with a bad carb. I replaced it with a keihin off the eBays and it jetted it with the stock size. Does great in 2nd and beyond but struggles in first. After playing with the main jet and needle I'm at a loss. It wouldn't be a problem but I can't pull away fast enough off the line and I can't beat the slammed WRX next to me at the lights. The carbie I bought has a power jet on it. I suspect it's too rich because of it. Any thoughts?