700 rmk needle change and spring id.

Jan 3, 2008
706
288
63
33
Northern Utah
Running a 2001 rmk 700 engine in my hawk. First thing this engine has horrible bottom end. Im running stock pilots and stock needles. I swear I heard people used to swap out the needles in the rack style carbs. Is this true?

Second can anyone I.d. this spring. Its light blue with a white stripe. I think part of the bad bottom end is not enough engagement rpm.

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