1999 BMW K1200LT

I BOUGHT MOTORCYCLE USED JUST RECENTLY FROM A PRIVATE OWNER. WHEN TEMPERATURES STARTED REACHING UP TO 90 DEGREES AND ABOVE, THE THROTTLE BECAME VERY HESITANT WHEN DOING A SLOW ACCELERATION. THE VEHICLE WOULD HESITATE, THEN SURGE FORWARD A COUPLE TIMES.. EVEN WHEN HOLDING THE THROTTLE CONSTANT. THIS HAS PUT ME IN DANGEROUS SITUATIONS ON SEVERAL OCCASIONS LIKE WHEN MAKING TURNS FROM A STOP AND THE BIKE DOES NOT KEEP THE CENTRIFUGAL FORCE TO HOLD THE BIKE UP BECAUSE IT HESITATES, OR WHEN ACCELERATING IN RUSH HOUR TRAFFIC OR IN BUSY CITY STREETS (I LIVE IN THE WASHINGTON DC METRO AREA). THIS IS 800 POUND VEHICLE ON 2-WHEELS. ALONG WITH A RIDER, PASSENGER, AND LUGGAGE, I HAVE TO BALANCE AROUND 1200 POUNDS ON 2-WHEELS AND IT BECOMES A HUGE SAFETY CONCERN IF THE BIKE IS GOING TO STALL, HESITATE AND SURGE FORWARD UNEXPECTEDLY... PUTTING ME AND MY PASSENGER IN DANGER. THERE ARE NOT TOO MANY BMW MOTORCYCLE DEALERSHIPS AND THE TWO CLOSEST ONES (40 MILES AND 60 MILES AWAY) GAVE ME A HARD TIME ABOUT IT AND SAID THEY COULD NOT FIX IT. I WAS TOLD THAT THEIR IS A FIX BY REPLACING THE MOTRONIC COMPUTER IN MY 1999 K1200LT AND PULLING A CAT CODE PLUG UNDER THE TRUNK, BUT BMW WON'T DO THIS. WHY? THIS IS A HUGE SAFETY CONCERN AND I'M SURPRISED THAT THIS IS NOT A RECALL.*AK