Question about Noise while releasing clutch / Clutch Jitter / judder / Grinding noise

I replaced mine at 46,000 miles while doing the 40K service (a little late). The friction plates were still well within spec, but it appeared that the anti-judder ring had worn a groove into one of the plates. Given the time and effort to get to them I decided to go ahead and replace everything while in there. No more judder and definitely smoother shifting.

I did a video on the 20/40K service (valve check, valve adjustment, timing adjustment, clutch change and bleed, fuel and air filter, and spark plug renewal ).
The clutch replacement is at 10:08......


 
please can you advise, If I can just change anti judder ring as my miles on Rocket are around 18K miles,