How heavy should a hive be going into winter?  I'm a bit
worried that mine are a bit on the light side.
 
When weighing a hive with a spring guage, do you weigh
each side of the hive in turn, with the other side still
resting on the hive stand and add the two weights together,
or do you take the average?
 
Also, have I left it too late for feeding?
 
Cheers, Mike. (Bristol, UK)
(PS: My bees are in BS Nationals)