05 450exc,JD kit great until new diaphram!?

ok, i am officially frustrated!the jd kit i installed works well enough but the fuel milage is a issue.went out last sun.and hit reserve at 40 miles. so i decide to put in the crf A/P diaphram i have had on the shelf.bike runs like crap unless i gently roll on the throttle.i have the blue needle on the 3rd clip with the 172 main,fuel screw at 1.5 out.ride around 1500 ft.does the A/P need to be primed,if so how? any advice on getting more miles out of a tank is greatly appreciated as well.thanks -bob :banghead:

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