Audio sync problems converting MKV (DTS audio) to PS3 compatible file using MKV2VOB

I've tried various searches in the forums and can't seem to find the solution. I'm sure it's hidden away in a thread somewhere, but can't find it. Apologies for creating another thread!

I have a MKV file with DTS audio. Previously, when using TsMuxer to convert the file to M2TS for the PS3 the file played without any audio so after a bit of reading online, I realised that the audio needs to be converted to AC3 in order for it to be compatible with the PS3.

Using MKV2VOB, and ticking the "Always transcode DTS" button, the audio converted to AC3 and now although I get sound when I play it on the PS3, it is 2-3 seconds out of sync.
I don't know how to correct the sync problem and can't seem to find the solution anywhere.

Could someone please help??