Hey Guys I was just building my mtx-4 and got to the shocks and found something strange. I have 3 shock pistons with 2 holes in them and 1 shock piston with 1 hole in it whats the deal.What is a good weight oil to run in my shocks. I will be running on a asphalt oval. Any help would be great because this is my first onroad car. Thanks in advance.