Hmm, you must not have 9-speed Shimano bar-ends then, maybe it's 8 and that's why you're not using the clicky side. In that case you need 9-speed but not Advent. You can get Shimano 9 bar-ends, or this Microshift (NOT Advent).
Be aware that both are technically for Shimano road and I've only ever used the Shimanos with mountain derailers (it works). https://northwestbicycle.com/products/microshift-bar-end-shifter-set-9-speed-road-double-triple-shimano-compatible-silver-ld0109?utm_medium=cpc&utm_source=google&utm_campaign=Google%20Shopping&gclid=Cj0KCQjw1Iv0BRDaARIsAGTWD1ssIAw7ffyMvbpMGqsFqjojwe6U340Z3CDdFwHbtLEMSGERrhMAC64aAq64EALw_wcB -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/rbw-owners-bunch/fb2537ef-c549-4e2a-a7d2-7ab595a129b2%40googlegroups.com.
