short update, the avo inserts in the front legs give up the ghost (again) so, in our infinate wisdom, decided to use challenge inserts in e30 m3 front legs and coilover them, unfortunately bilstien u.k gave us the runaround for 9 weeks then said they couldn't help!!
so we started to panic and after some searching found a company that had the base insert and could re-valve to our settings. they're now in the garage looking like this
but have 4" more travel, screwing over the camber settings etc , so inbetween hols we are going to get the thing somewhere near and pray it works on the pendragon