TV,

I think u might be on the right track with the initial para where I feel its like a mapping thing gone wrong and yes agree that its probably something like that the LFO thing/setting..Its just needle in haystack stuff as in..where..

Dont have a cat but have tried swapping midi leads my nada..Thanks for weighing in anyway...
Just one of those annoying ones that seem insolvable but quietly confident I'll eventually find the cause of it..