I am having some problems with bumpy roads. On smooth roads I'm great but on bumpy back roads I'm all over. Would this pitman arm make that happen? I'm a '53 Chevy 3100 with a straight axle and power steering. I have a steering stabilizer and everything is tight on my steering components. My wheels have been checked for toe-in but I'm still all over. PO did the upgrades but something about this doesn't look right. It looks like the kit from Classic Performance Parts minus the pitman arm. Any ideas?