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[QUOTE="yota_fanatic, post: 1219804, member: 79349"]
Hi, 
  I have an 03 RM250 that was jetted horrible when I got it. 
I live in West Virginia at about 1200ft. Temps are 80F'
Jetting when purchased.
-45 Pilot, 
-170 Main 
-stock needle middle clip
-Air screw 2 turns out

This didn't work to well on bottom end. Loaded up really bad. Top end was good, once it cleaned out.

Got a 168 main, great full throttle, black spooge all over rear fender though.

So tried top clip on needle, same. Little better bottom, still blubber.

Tried 42 pilot, same. Little better bottom, still blubber.

Got a 40 pilot, and a n3wk needle at the same time.
N3WK (stock 01 RM250) still rich on bottom, middle clip. Ran worse on bottom, foul, lots of spooge.

Air screw at 2-3 turns, still blubber up to 1/2 throttle, then its great.

Going to try 1st clip tommorow.

Is a N3WK needle leaner than a N8RH?  
I went with Bill's pipes recomandation. Top end is great, but below 1/2 thottle is blubbery, not crisp.

It sound like it should be really lean, but it's very rich on bottom. Probaly could go back to 170 main, but I will get bottom end jetted right first.

I would like some jetting help here, please.

Aaron
[/QUOTE]

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