You can use the J and K keys on your keyboard to adjust sync, forwards with K and backwards with J. But only if you're using VLC
Media Player. 100ms is one 100th's of a second, so every keystroke adjusts it, K for forwards (delaying) or J for backwards
(hastening) at 0.50ms intervals; respectively.
Other than that, you'll have to wait for the WEBRIPs to get indexed once they are posted and available. It shouldn't be too much
longer of a wait from now....