I'm the OP. All fixed, I can reply now. Re: the maths on avg karma, I was trying to remove the automatic +1 vote that I get for making a comment from the avg,

I'm the OP. All fixed, I can reply now. Re: the maths on avg karma, I was trying to remove the automatic +1 vote that I get for making a comment from the avg, so somehow came up with 2 out of 3 instead of 1 out of 2. I must admit I didn't put too much thought into it.