After I posted that last post, and got off the net I had one of those "Hey wait a minute, that doesn't work" moments, the 1.375v drop, just doesn't work out to anything easily calculated and the 90mv for the TSL 100 was per side, 45ma on a EL34 is not going to last to long with 500-600v on the plate, I'd like to get my hands on a TSL100, then maybe this would make some sense......