All my lights are air-cooled.

Perhaps the bulb in the 600 is going bad? I'm clueless here.

I'm going to pull at least double off most of the other Disels... though they are from a different source I've already done a full cycle of the same Diesels that are currently giving me a problem - everything worked out great last time.

I do still have two weeks to go, but I'm positive they are going to end up extremely well. Oh well, at least there's only seven of them.