Hi Nigel,
Well I certainly hope they haven't been daft enough to let him leave because he is a real asset to them and knows everything you could possibly hope to know about a truck mount and how it works and even more importantly how to fix it when it isn't working.
I've rung the service dept a few times and whoever they have got in there doesn't seem to know much about even the most basic parts. Something's gone wrong, that's for sure!
Simon