2007 BMW R SERIES Wheels Problems

MOTORCYCLE SHIFTED FROM 1ST GEAR TO NEUTRAL AND CLUTCH RELEASED WHILE WAITING FOR LIGHT TO CHANGE. TRANSMISSION FAILED TO SHIFT INTO 1ST GEAR TO MOVE OFF WITH DEPARTING TRAFFIC, RESULTED IN TWO NEAR REAR END COLLISIONS WITH FOLLOWING CARS. RETURNED TO DEALER FOR 600MI RUN IN SERVICE, FAILURE OF MECHANIC TO PROPERLY REINSTALL THE ABS BRAKE SENSOR IN THE REAR WHEEL, PINCHED O-RING, CAUSED FINAL DRIVE OIL TO COAT REAR WHEEL, CAUSING PARTIAL LOSS OF CONTROL IN CORNER, NEAR HEAD ON IMPACT WITH OPPOSIT FLOW OF TRAFFIC. I WAS TOLD BY DEALER OWNER AND SALES REPRESENATIVE, AFTER THE SALE, THAT THE FAILURE TO SHIFT FROM NEUTRAL TO 1ST GEAR IS NORMAL, HAPPENS IN SOME BIKES OF THE SAME MODEL AND NOT IN OTHERS, AND WILL DISAPPEAR DURING BREAK IN BY 6,000 MILES. THIS SHOULD HAVE BEEN MADE KNOW PRIOR TO THE SALE. THE DEALERSHIP OWNER CLAIMED SAME OIL LEAK HAPPENED...