I didn't check the timing cover I was putting on a 99 vortec 5.7 in a caddy, looked and it had holes. Put the harmonic balancer, pulley, water pump, oil pan, and looked and the Pioneer cover didn't have a threaded brass insert, just a bare plastic hole. What should I do, I hate to take it all apart and ruin all those gaskets if I can remove the old insert and put it in there? I know RockAuto will warranty the part and nothing else, so I hope this is something I can fix.