Campagnolo Chorus Freehub/Lockring Woes

[frieddoh]

Hi Everyone,

This is my first posting, a pal of mine on the board recommended that I ask for some advice from the community, so here I am.

I am in the process of a new bike build and have hit a roadblock with the rear wheel. The lockring for the cassette does not thread onto the freehub which seems to be a common occurrence. Went to LBS, they said could be lockring, could be freehub... an that I could replace either but should start with some gentle persuasion to get beyond the threads that are not catching. Spent a while tonight persuading with no success... I don't think such nice bits and pieces deserve a hack/kludge/square peg in a round hole.

Here are the particulars of what I have on hand sourced from various sellers:
Campagnolo Chorus hubset (9 to 11 cassette)
Mavic open pro SUP clincher rims, 36 holes
Campagnolo Record 10 speed cassette with & lock ring

I think that the cause of the problem is that the freehub threads are toast

My plan is to replace both the lockring and the freehub, but I'm unsure of what I need in terms of part numbers for lockring and freehub. The freehub job looks doable but it may be worthwhile to let LBS get the job.

Thanks for your help, it is greatly appreciated!

I've attached photos for reference,

Dan
Durham, NC