Big Bore pistons/oils....tuning?

[kwiksi]

There are 5 piston options for the big bores. I have preordered and recieved a few and they all seem to have the same size holes in them. Is that correct?

I like using the same pistons in all my buggies/trucks to keep the balance consistant. I'd keep em all similar when I owned Losi -#56, AE -#2, and Kyosho -3B. Using oils to alter damping.
With soo many options I dunno where to start when I build my kit Monday. I have 2,4,& 6's. With 3 & 5 rounded on backorder. I may start with 4's all around and tune from there.

What hole pistons is everybody using? I realize he kit includes 4 hole front and 6 hole rears. Such a large diff.