[Charlie]

You're in luck kiddo! I have duplicates of this particular Sams, so I'll just send you one of these. PM me with your address and I'll get it out to you.

Looks like your sets uses either a 24YP4 or a 21ATP4. Was also noticing that you have those selenium rectifiers, but your set uses a dedicated 6 volt filament transformer to give you parallel heaters.

If all is clean and properly grounded, you shouldn't get that. There are only 2 other things I can think of...

1. Examine the dag coating where the grounding strap or spring makes contact with the dag. The coating could be worn off at that contact point. If it is possible to re-posistion the spring or strap across the dag... even moving it just a half inch one way or another... that may help. If a spring it used, sometimes they get rusty. That may also cause a poor ground to the dag coating.

2. The route you HV anode lead takes from the cage to the box... does it lay against the dag coating somewhere before it gets to its connection? This one is somewhat of a long-shot, but wouldn't hurt to check. If they anode wire is up against the coating somewhere AND the anode insulation is breaking down where it touches the dag, this could be causing a problem. Seems this would be less likely, but we've all seen stranger things. OR, since you mention it only being on that one side near the anode lead, perhaps that is where the arcing is actually coming from.

Just some thoughts there... hope they help some.