sycnh big trouble

Hi i am new to using dvdrip and are trying to rip my dvd collection to
hd. I am however having really big difficulty with video and audio
synch. I have set the psu option and still no good. I have tried mp3 and
ac3. I have tried xvid and ffmpeg. Nothing seems to change still synch
trouble and it is not just one movie but all of them. I ripped twenty
before i realised that there was sycnh trouble. What bugger aye.
Would appreciate any advice or help. Maybe if there is another way of
encoding which has clcipping as well like dvdrip.
Cheers
Damian