Alright, got the shift knob done. I had no luck trying to keep the OEM from being damaged while un-screwing it from the shaft.
I think NISSAN is just trying to tell all of us Shift-Knob-Maniac that changing the knob is a no-return thing, you better get the new one fit!! LOL
Anyway, just a tip for those who will get a MOMO in the future.
Since the MOMO knob is universal fit, it doesn't come with a base like the one from PWJDM, and when putting the MOMO knob on the top of the shift boot, it fits very awkward because the plastic ring under the opening of the boot, because the plastic ring is flat and the diameter is much bigger than the MOMO knob, it makes the shift knob looks like sitting on a flat-platform.
So, I took off the shift boot, and found out the other side of the plastic ring is actually concave instead of flat, and it was attached to the shift-boot by cable-tie.
Simple step, cut the cable-tie, flip the plastic ring and tie it back onto the shift-boot with a new cable-tie, the concave side of the ring fits perfectly with the shape of the base ring of the MOMO.
After finish the shift knob, I was, "tools are all here... mmm, clutch-spring...."
Yup, remove that as well!!
I didn't have a chance to test drive the Z cause the snow and wet-road outside, but yes, you guys are right,
now I can feel the clutch point!!
Pics: (Sorry about the blur, VERY VERY LOW LIGHT, I took the shot with only the interior lights on, garage lights all off, ISO was at 1600, f/2.8 with 1/2 sec, hand held)