Hi steve,
I have no help for your problem but know a man who does!
In the magazine "What Video and Widescreen TV" there is an excellent video forum where readers pose questions and they get an answer to their problems. To get a personal answer fairly quickly (it can take up to two weeks) send a cheque for £4.95, made payable to Eugene Trundle, together with an S.A.E. to the following address:
Video Forum,
What Video and Widescreen TV,
Highbury Entertainment,
53 - 79 Highgate Road,
London NW5 1TW.
There is an e-mail address but you will not find a response to your question until it appears in the magazine a few months from them. I have used the personal reply myself, which is of great help.
I subscribe to this magazine and it's well worth buying a copy; this will show you the sort of questions and answers.