so i bought one today, and with it came all the kite suff and some oil. supposing the gun is brand new, right out of the box is there anything i need to do to it to get it in working order other then put it together? do i need to put the oil in the gun? also what makes a good paintball gun "good"? if i give you my exact paintball gun will you be able to tell me if it's good? it is a tippman 98 custom