Tested the NBZY (stock 865 SM) needles...

1 shim was too lean.

2 shims - better - similar to N3RF (TBS) with no shims, however not quite the same...leaner in some areas, richer in others. The N3RF did better in the 3500 - 3600 RPM cruise, & at light throttle openings.

N3RF (with no shims) gets the nod as the best overall needle for my situation, & they are back in.

Next, I want to find the correct size drill bit to custom-drill a 47 pilot jet...