I know this. I feel this is a mistake that many folks make. Its still a stock needle for a stock bike. I have performed 2 air box removals/Dynojet upgrades for the Triumph Thunderbird. Same holds true for the Truxtron needles. Still a stock needle for a stock bike. Junk. Oh BTW..don't change your pilots. Leave the 40s.
Its time to change.
http://www.dynojet.com/jetkits/motorcycle/triumph.aspx