The effectiveness of a tank expansion is greatly effected by the size of the passageway that is connecting them. If it's too restrictive hen the expansion will not add a noticeable improvement to the output because of the restriction of the connection that leads to the expansion.
Just something to keep in mind and o explain why I put mine closer to the big blast trigger valve and connected it with a 1/4 brass pipe nipple.
Thanks for the input, I have noticed that the tubing is a little small, but the range is still increased from the original. I may put wider tubing in it from my old fish tank. Note to anyone doing this: Like sluggy said use bigger tubing than I did if avalible and get as close to the air tank as possible.