What happened to your sporter? Mine is still going strong and I have one of the prerelease versions, years of use and thousands of rounds, the strap for the barrel needs replaced but hasn’t fully ripped apart.
It wouldn’t log shots the last time I tried using it a couple years ago. I tried fresh batteries but haven’t bothered trouble shooting any more the LR has run without a hitch.
It would gradually start to slip on some of my rifles too. Not a deal beaker but annoying.