well today out of curiousity i tried to put back the old spark plug(The one that blew out) and it go tight but then after trying to torque it .. it became loose. so i took it out and put a brand new one in and it tightened and didnt slip and become loose so i hooked everything back up and now she runs like a champ. so hopefully she'll stay running good for a while. this weekend i'll be replacing the rest of the plugs and ensuring they are tight. i def think this was alot better than spending 300 or a helix coil or even 2,000 for sume new heads.