Jimmy,
TBS needles are N3RF and the Thruxton needles are NBZT. TBS needles are Triumph part #T1241024. However, I am going to suggest you takes things slowly and not go and change everything at the same time. If you do and something is screwed up, it's going to take you longer to dial it back in.
What kind of riding do you do? Around town or lots of back roads? Do you regularly get up to the top of the revs or stay around 3-5K? How did you determine it was running lean? Seat of the pants? Plugs?
I am going to assume you ride the twisties a lot, typically keep the RPMs up, and used the plug/seat dyno to determine lean....
I would leave the idle circuit alone right now. I would also not touch the needles yet UNLESS you are experiencing a midrange RPM slump (or dip in power). There is nothing wrong with the stock needles in a more or less stock bike. If anything, you could shim the stocker with one or two shims. I would concentrate on the main circuit. As long as you have 130s on the way, use them. Swap them out and take her out for a ride and see what's up. Go up or down from there (I'm betting closer to 125 might work). Once you have the mains close, you can try shimming the stock needles.
Main thing is, try things one at a time and go slowly.
Work
