The arcing problems I had were a result of the grounded dag being to close to the anode connection on the glass crt. The boot is coated on both sides as Tom C. mentioned. In a normal glass crt installation there is a region surrounding the anode connection with no dag coating. This isolates the the region from high voltage arcing. What I ended up doing was making the hole in the boot larger and getting a good anode lead suction cup. BTW, the hole I drilled for the anode lead almost cuts into the rib.
Ed
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