YankeeJim:
Have you tried different spins with that shot and if so, are they typical results?
Not really Jim... Not into chipping on the greens, I would rather Putt to get that Diamond putting award.. lol. My putting is not bad... just use the shot when it's needed.
In the situation when there is a huge hole between you and the pin (like the OP's situation) then I would chip it, which is around the 30yrd mark. Anything longer or shorter...not sure
I know that the Full shot, Full B/spin with the c64 wedge, when there is a 25-30 yrd range does work. It gets you within the 1-2rd mark.
It's not natural for me to use the chip shot on greens.. just have it in ya bag if needed.
-Roger