I'm currently having issue with transaction cycle #187928 which is damaged, If I leave it alone the transaction clerk goes 'stalled' and watchdog restarts it...
If I try to do a manual repair starting from #187928 it starts an everlasting loop where it repairs #187928 constantly until the script dies...
and interestingly enough I end up with:
199.84% (-187,665 Transaction Cycles to Update)
After restarting the server, making a manual repair on #188000 apparently fixed the problem...
(I'm using 3.49)