Well OK, but I'm not picky about the handpositions, as long as the barrel point in the right direction
The grease gun was very good in my opinion. But to make it a bit more accurate, you could allways tilt/rotate it slightly to the right, just a tiny bit, so that it is a bit more up-right. It's currently leaning a bit too much to the left when shooting(I don't mean the barrel, but the whole gun is kinda laying down on it's left side)(I'm exaggerating of course).
But that's just details... I think it's good enough as it is.
Thanks for the MP40 link, wierd that I haven't found it before.