Quick update on this! The new fob batteries worked for a day and a half! Then it started playing up again! I had to put it in valet mode until I could have a look at it! Had a look at it last Thursday. I took some of the interior apart to try and find the proxy sensor control box.. Took a couple of attempts to find it but i did! Turned the adjuster, tested it, turned it the other way, tested it, and so far so good! At least I didn't have to take it somewhere and pay over the odds! Good outcome in the end!