ok, so i got my 6.2 up and running. on first start up after the engine has cooled for quite some time, it has a really rough idle while i wait for the engine to warm up. i misses intermittently, and is just rough. when i hit the glow plugs tho, it smoothes out until i let go of the button (manual set up). now, my gp controller doesn't click on and stay on and then click off, but rather when i depress the button it buzzes as if it is switching on and off extremely quickly. could it be that my gp's aren't getting hot enough b/c of this? also, for what it's worth, i didn't replace the copper washer/gasket deals on the injector lines when i reinstalled it - don't know if that's causing a loss of compression which would affect this (but keep in mind i only have this problem on cold start ups.) Thanks guys.