Is your wireless component power randomly cutting in and out even with an update and a full battery charge? We have seen the little gold connecting pins fail in the component. You can tell this most easily by looking at the two or three pins with the battery off and making sure they are all the exact same height and spring back when you push on them lightly with your fingernail. Inside these pins are tiny springs that sometimes wear out and break. Sram will warranty this for one to two years if you are the original owner. However if it is too old or does not qualify for a warranty and you don’t want to by another $800 derailleur we can help! For a flat rate of $150 we will replace all two or three pins in your sram component. We disassembly your unit and remove old pins and solder in brand new ones. Battery and shifter must be sent with the unit for testing. Not all components are a guarantee fix, as with electrical components, but so far we have had a lot of success replacing pins and getting a few more years out of your gear! Questions, hit me up at jimmer@brassbellbikes.com