I really like the versatility of Schon shafts,
12mm - 14mm diameter, anywhere from 28" all the way up to 32" length without special order, and they're easy to come by.
Can I get just the parts needed to replace my cue joint with a genuine Schon joint?
My intention will be to use Schon shafts of different lengths and diameter on all the cue butts I have. I WANT ALL CUES OF MINE TO HAVE SCHON JOINTS.
In re-reading the OP's orig. post, I think I may have a better understanding of what he's asking.
My current thinking is that he believes that having Schon shafts fit exactly as intended on other cues, he'll duplicate the hit/feel of a Schon, particularly if that cue/handle has a Schon style joint.
Man, talk about a can of worms!!!
First of all, almost any steel jointed cue can be modified to accept the Schon shaft correctly, as intended by Schon.
It doesn't need Schon-factory parts to accomplish this.
Secondly, the hit of a Schon cue is the result of the sum total of ALL of it's parts, not just the joint collar. From the tip to it's bumper, every part is designed & selected to contribute to the overall package that is known as the Schon 'hit'. Just changing the joint collar alone won't do this.
I can summarize this very quickly for you. If you like the hit of the Schon, buy a Schon cue and be done with it. It's the only way you'll get the true Schon hit.
I'm not in agreement with the OP about non-standard Schon shafts being available without a special order either. Seybert's is a Schon dealer and I guarantee you that you will not find one 32"/14mm Schon shaft available on anyone's shelf without a special order. You're going to wait 4-6 weeks just for a 30" shaft.