I have an 06 m6 wifes sled that usually runs great but in the last few rides it is like it would just start missing or like you hit the kill switch you can hold smooth constant throttle and sometimes it misses and sometimes it is like you hit the kill switch for a brief second any ideas would help, I was told it could be throttle position sensor but not sure if there is any way of testing I havent tried injector cleaner or water remover I put some in the first ride but not sure if it needs it agian. any ideas would be usefull thanks