yeah, but he will tell you if the settings are right... he's a member on the forum here (or you can go to the wim forums and sign up there and ask for a faster response) so you could PM him...
He's many miles from me as well, but there is a WIM affiliate in Edinburgh, and they should be aware of the Lexus setup issues, and if not the affiliation means they can just call up tony and ask him...
Or you can go to CLCL in Edinburgh who I'm told are very good as well (that's who set the geo on ormi's IS200 I think).