When my bike was taking turns starting badly (either low idle and dying or super high idle) and running smooth then rough a mile later it turned out to be a TPS that read fine but was bad. Had to talk Triumph main U.S. rep into sending one to local dealer . They test road before tps, then installed with no other tweaks and test road...perfect. My next four rides averaging about 200miles each were fine, then 300 miles into a weekend trip I started to get the low idle, not always, but most of the time. Took it to a dealer on trip who said everything read fine except the TB's had the mid cylinder out of sync with the 1st and 3rd. Getting that synched thursday and hoping that was it.. The question is, why did the sync get screwed up?!