Stingers get out of sync

Question

Hello! I am using Wwise stingers. I find it difficult to synchronise stingers with the main track. I know how to do it properly from your tutorials. At the beginning of the track everything is great, but when the track riches 3-5 minute playing stingers start missing a bit and after 7-9 min they get completely out of sync. Could you help me or give some advices? Thanks in advance!