Tony, please don't let me experience of the X1 be a common issue across all Ketron's because I am sure they're not! It looks like I was just unfortunate with the X1 as I did buy the early models and usually if there was going to be a fault it would be in the early releases. After that though right up until I sold my X1 it worked fine!

As people have already suggested, no board is infallible or perfect especially at how complex they are becoming.