ahh .. fanks
just take your time ... and do it when he is asleep
if you put some pressure between the pads so they splay slightly its easier to cut (but still cut flat across the pad
took a few cuts in different directions to get it to where I wanted it to be
I then use the end of the nail as a guide and trimmed round his foor from there (from underneath, which I know is incorrect .. but he was sleeping .. so no way to get him to stand .. and be still lol)