I think I already know the answer to this question, but do you guys know if some of these FCR needles are interchangeable between years? For example I have 2 JD jet needles for my 01 426. Will these work on my 07 FCR carb? Does anybody know what the correct stock needle is for the 07 carb? I bought my carb used on ebay for my 426 and want to know what my options are.