Compatibility issues

Oops. SRAM Attack grip shifters do not work with an X-5 rear dérailleur. I should know that. Too excited to get a shifter that won't hurt my ever increasing tendinitis issue I guess. Bummer. Hopefully I can get a rear dérailleur to match the shifter 'cuz Lord knows I want to ride my bike pain free. And shifting is a good thing some times.