How can I get the correct gunfit with my Browning Cynergy?

It has an adjustable comb and stock. Should I try to get the comb right first and then the stock or vice versa? I have worked out the correct eye dominance.

GUNFIT
Rob Eaton
To be honest it would be best if you took it back to the gunshop and asked someone there to set it up for you ? you?ve certainly paid enough money for that service.

If that isn?t possible, get the right stock length first and then alter the comb and cast to get the correct sight picture.