That's totally possible, because Ed sealed the fly in a sarcophagus of RTV
Very first powerup I smelled something that smelled like melting silicone, so before the second powerup I turned the HV down (was about 3/4 of the way up, powered it up at about 1/4 and registered about 21 kV.....thinking that was okay for the moment since I'd assumed it was running high).
If it's moisture that RTV has it sealed in there. Do you recommend that I peel it off? No obvious signs that it needs it.....