i need some advice on install the valve springs w/my cams, first did you remove the stock cam before installing them, and how do you keep the valve shut by air or by the piston and how exactly do you do it by air, and if anyone knows of a spring install right up that would be great.....i just found out that w/my custom grind cams i am going to have to install springs also i was planning on just a drop in cam which i wasnt nervous about at all but the cam is a little too aggressive for stock springs im just freaking out about this install so any advice would be great