So, on the stock VSR/BAR hop up, there is the arm that pushes into the bucking. This piece will wobble back and forth, throwing off your hop up the tinyiest bit. What you need to do is buy some AEG shims (I use the Matrix ones, because they come in 1mm amounts) and make sure the hop up arm won't wobble left and right anymore.
And hey fuzzy, I haven't been here in awhile... how's your VSR nub project been going?
And hey fuzzy, I haven't been here in awhile... how's your VSR nub project been going?