my roomate was riding in the neiborhood on his newly purchased f4. 4000 miles on it clean title. so, bike was cool and then when he stopped the oil light came on and the bike shut off. had to pop start it. checked the oil and its full. bike would not start for 20 mins. then started fine but sounds like a v twin now when it starts. when i held the trottle to 4 thousand rpms, it held there and then dropped to 2000 rpms on its own with my hand at same position. any help would be great evn to get it running so he can get it to the delership he bought it from. thanks very much.