2-3 shift flare confusion...

[davew833]

OK...I've been searching the archives all weekend trying to figure out what to do about my tranny issues and I'm confused. It occasionally flares between the 2-3 shift, and sometimes doesn't find 3rd at all. It does not slip in gear once it finds it, though, and when I drop it into 3rd by moving the shifter, it's fine. I've seen several possible fixes here but I'm confused about which one to try. Do I:

a. Adjust the brake band (looser or tighter?)
b. disconnect the tranny resistor behind the battery
c. crush some other resistor somewhere (not sure at all about this one...)
d. get a new transmission.
e. none of the above

The fluid's just been changed with synthetic, and I've made the appropriate sacrifices and supplications to the 4EAT gods.

Thanks for any and all help-