I'm sure someone with more knowledge will be along soon, but I think it does only take the 'liability' into account (I usually try and make sure that I have both the lay stake and liability total in the account first - just to make sure I am covered).
Also, I think it is better if the lay odds are slightly higher than the bet odds amount. Hope someone else can clarify this for you, I am still learning
What 'rating' did it show in PA - it needs to be around 95% - if it is 100% or over I believe that is classed as 'arbing' and not recommended.
Can [member=1]Jon[/member] correct me if I am wrong about any of this - don't want to give anyone wrong information, thanks, just wanted to reply as wanted a quick answer