Shimano SL-M310 Rapidfire shifter takes a few shifts to start engaging properly. Anyone got any ideas on a fix, or is replacement the only option? : r/bikewrench
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Amazon.com: 2Pcs Professional Sl-M310 3x8 Speed 24S Shifter Trigger Set Rapid Fire Plus W/Shifter Cable Bike MTB M310 Shifter : Sports & Outdoors
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Shifter: Shimano's SL M310 needle dropped. - Pinkbike Forum