Where can I source S4 MK3 upfaders from? Native Instruments will not help!

I think that parts questions for N.I. stuff pop-up from time to time as well as questions about repair diagrams. But I have really no idea as to how successful people are in getting anything. A short while back there were another discussion , but no final feedback has been given as of yet ! Ref. : https://community.native-instruments.com/discussion/18494/traktor-s2-mk1-circuit-board-diagram

Some of the other users at places linked to might have better tips or info for you ! , e.g. : https://forum.djtechtools.com/forumdisplay.php?f=27 and : Repair DJ Gear repairs and modifies many Traktor S2 and S4 controllers. : https://repairdjgear.com/traktor-s2-and-s4-upgrades/ , https://repairdjgear.com/product-category/native-instruments/ (Actually lists parts such as e.g. Mini Innofader PNP P )(though at horrific price !)

P.S. I found this for you at the InnoFader.com site : Supporting Documentation: Mixers / Controllers that work with the mini Innofader PNP P

Quote among other :

Native Instruments   S4 MKI, MKII   mini Innofader Plus   Innobender      

Native Instruments   S4 MKIII   mini Innofader Plus         

Native Instruments   S8   mini Innofader Plus   mini Innofader Plus S      

Native Instruments   Z2   Mini Innofader Pro SC   Innofader PNP3   Innofader Pro2   mini Innofader Plus

I am afraid that I knows to little about the subject to even properly know what to look for. E.g. here Miscellaneous DJ Accessories then most of it is Replacement Crossfaders & Knobs but it mentions line faders also in between , but I wouldn't know anything about compatibility either. But one could ask to see if they would be able to supply what you want ! Even Sweetwater sells faders though maybe mostly or only cross - dunno !

Incidentally , I 'scavenged' all the latest links from a discussion over at Reddit , and Reddit can be very useful if you can manage to pick the right sub-Reddit ! 🤔

P.S.

I just asked German Thomann.de at behalf of you for the availability of an upfader for Traktor Kontrol S4 MK3 and their answer were this :

Hello, we don't have it directly on the website , but you can write us an email of the exact sparepart you need (removed) and we try get back to you if it possible at which sots and delivery time.

(I have removed the email address and will P.M. it to you ! OOPS ! your profile is private and I can not message you ! so write their DJ department ! )