Mopar 418 Build

Anyone have pushrods that are not centerd in the pushrod holes in the heads on a 340.When I tore my 340 down to build my 418 stroker I noticed that 2 pushrods on each side had a smooth groove on them. When I rebuilt the engine I bought new pushrods and rockers.I had to take the engine apart because of crank hitting the windage tray.Lots of little metal pieces in the pan.It only ran for a few minutes but I still have the rubbing on 4 of the pushrods.It is not bad but what can I do? Evidently it was not to big of a problem because the last rebuild was 12 years ago. Any ideas?