It prolly wouldnt hurt to put that back on. Its only a 10mm I think.the only thing i don't have hooked back up properly is the ground strap from the valve cover to that head. does that make a difference. the car drove fine for 2 months after the rebuild till last week. no tuners closer than that to me. im trying to get it back to running right i might need it to fall back to driving as a dd again. business isnt looking good.