Perhaps someone else will come along that can help you further.
I don't actually know how much an 8x10 would be from the US because I always send 6x4s anyway.
I spend alot of time on this section of the forum answering (usually the same ones over and over again) questions, and alot of people don't bother to say thank you, so I do appreciate your thanks.
My method is to point people in the right direction, give them the tools and steps to get to the answer they need, rather than doing all the work for them

I've even started linking to previous threads as my answer if the question is asked and answered there rather than typing the same stuff over and over.
(this answer is not aimed at anyone in particular btw).
Perhaps someone else will come along that can help you further.
I don't actually know how much an 8x10 would be from the US because I always send 6x4s anyway.
I spend alot of time on this section of the forum answering (usually the same ones over and over again) questions, and alot of people don't bother to say thank you, so I do appreciate your thanks.
My method is to point people in the right direction, give them the tools and steps to get to the answer they need, rather than doing all the work for them {up} I've even started linking to previous threads as my answer if the question is asked and answered there rather than typing the same stuff over and over.
(this answer is not aimed at anyone in particular btw).