I am contending with this right now. It is getting down to -22C and I decided its not worth the risk. I was told by an engineer that if you attempt to use the AM5 at these temperatures it might work for a while but if you do a fare bit of slewing the stress may be too much and the mount can be damaged. The fact you got away with this is specific conditions and a bit of luck. The dew strap likely save the day.
Let hope for some better skys eh?! what is it about this winter ugh...
GL to all
Dennis
