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92 rmx 250 needle question

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I am trying to find a replacement needle for my carb. The carb is a 38mm mikuni carb. I believe it is a tm series, but could be mistaken. The needle I pulled out i believe says 5AAY 1-67. The only number or letter I'm not sure of is the 5, as it is really worn and hard to read. The suggested needle per pro circuits website is a 62. I did just put on a pro circuit platinum pipe. I have changed the main jet down to a 350 even though suggested is a 360. But it still isn't as crisp on the top as it was with the stock pipe. I really need to buy a different needle, but I can not find my current needle anywhere to get a comparable different sized needle. Any help is much appreciated. Thanks for any help or input in advance.

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You've got a PC pipe so just go with PC's suggested jetting and buy the needle that they are suggesting then see how it works.

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