Heidi and I took a look at the cable connection at the vacuum feedthroughs. It seems the cables on the Left Dipole have a connection to the vacuum vessel on the inside, even the cables for the compensating coils. I did not spend a lot of time trying to interpret what I measured, nothing can be done until the vacuum is bled up and the bore of the magnet opened up. This is work for the long down. Till then it looks like we will just have to live with it.