I have been watching videos on the repair and servicing of Atmos clocks and I'm intrigued.  I have so far serviced three 400 day clocks, which look very similar. I think I'm ready for an Atmos clock. So before I blow $1000 on a low end Atmos clock, I have some questions. I'm just wondering how much more difficult is it to service an Atmos clock? Are there any special tools and jigs required? Can the ethyl chloride that we see being used to treat football injuries on the field