These have probably all been answered before but not lately.
1. Guessing TBS is ThunderBird Sport?, do we have a part #?
2. Needles effect the carb performance between 1/3 and 2/3 throttle correct? Or between pilot and main?
3. Advantages/ Disadvantages of needle swap?
4. Why TBS over Thruxton?
5. Quick how to?/ What not to do?
Thanks