im not using a synchronizer, i don't care about the nature, but my problem is that i need to get frame 307 but i got 3 times frame 309 whit different number of flips. 307 - 2 -1 = 304. It should be 152 flips but i got frame 309 whit 152, 151 and 150 flips so i don't know why i cant get my frame.