Chain jumping on bottom cog

[Giff]

Has anyone any suggestions. My chain is jumping my bottom gear (biggest cog) on my SRAM cassette.
I am on my second GX chain ( 25% worn) with the same cassette. I am using an AXS derailleur and all other changes are smooth. I don'y use this gear too often.
I have tried the micro-adjust on the transmitter....both ways but it changes into the bottom gear then slips back down. Anyone have any tips or helpful hints?

 

[Jackware]

Have you tried adjusting the stop screw on the derailleur?

https://www.sram.com/globalassets/document-hierarchy/user-manuals/sram-mtb/drivetrain/eagle-axs-systems-user-manual.pdf

Page 44;

 

[Giff]

Thanks Jackware I thinks that is it...I mustn't have set it up properly in the first place and only noticed this weekend when I needed bottom gear.An easier and cheaper solution than I thought !

 

[aviserated]

I recommend you hot wax your chain to prevent premature cog and chain wear. Hot waxing attracts way less abrassive dirt than wet lubes. Lots of videos on YouTube about waxing bike chain.

You will know when the smallest cog is worn, because chain will skip ALOT in this gear no matter how perfect alignment is. Replacing cog/cassette and chain is only cure. Be sure to hot wax new chain.

 

[RustyIron]

Be sure to hot wax

I googled on hot wax and followed the instructions exactly.
The boys have never felt so smooth. I can hardly wait go out and ride.
Chaffing is going to be a thing of the past!
(And the girlfriend is enthused about the results, as well!)