Yes, it can be really frustrating - I can't tell you how many times I measured the leg and the foot!
On the other hand it's a good way to spot mistakes.
I've finally finished the figure a few weeks ago but only got to taking a couple of pictures today. Certain details will be added in epoxy putty to the final figure (i.e. after moulding and casting).
I'll add the quiver & bolts, the hook for drawing the bow and possibly. Based on past experience, I think these details will make moulding more difficult so I prefer to add them later rather than have to do a lot of work cleaning the figure after moulding.