Bender_
X
Your fermentation accuracy is bang on. But you do seem to be losing some efficiency in the mash. Have you changed anything in this regard? And have you calculated how much you're missing your targets by?
I'd adjust the mash bill by that % for the next brew or two and see what it does for you. Only because you don't want to be starting from a low base, achieving high attenuation and then having 'thin' beer as a result.
This particular batch I mashed in too hot (69), then added some cool water in which made it GO TOO FAR THE OTHER WAY! (61), so then had to adjust it back to about 64 but by there was about 20L of water in the mash tun. I totally agree, I'd prefer to get the beer right in terms of gravity like FKASC mentioned above than hit the right ABV, but in the same breath it's not the end of the world and I'm not looking to win any comps.