so I ran a 600 mile round trip on my 5.7 with 200k miles on it everything ran perfect next day was checking fluids and It looked like my plug wire was not on the plug very well so I pulled it and decided to check the plug and somehow I snapped it in two so I took all of them out and got 8 brand new ones I put them in and just put the plugs back on and didn't add anymore grease it looked like it was still good. when I idle in park im at about 400-500 rpm and when im in a gear not moving its jumping between 1000-500. is there something don't wrong here the spark plugs are a 0.060 gap so I don't think that's an issue. my other possibility is my stuff hooked up on my positive battery terminal are really loose, they will stay still driving but can be moved easily with my hands. can the battery also be my source of the rough idles. I need some ideas.