Hi Dave,
Yes we have been round this loop before. I thought it was cured with V3.1 (which I'm running). When I loaded V3.1 I reset my polar diagram and since then my mysterious Spanish spike has not re appeared until last night (I get a spike to the same location in Spain). This seems to coincide with either G-BUUP or G-BUUR. What I don't understand is it seems to be only me that has this spike, so is it something with my set up?
See spike jpg
Cheers Jhon