Finally got tags and insurance and such back on my car so i've got to do a lot of driving in it here lately. I've noticed some ticking noise coming from the engine and i thought it was a lifter, and my brother agreed that thats what the noise was. What would cause a lifter to tick, and is it doing any harm orrr what? I plan on pulling off my intake to put on a mild single plane and new carb, so i guess that will be the time to go ahead and pull it all down and replace it. Can i order just 1 or 2 lifters or whatever from anywhere since i don't need a set of 16? Thanks guys for the help...