I got a call from a friend who has had nothing but problems with his Cat 5CP pumps. First the heads washed out, replaced them one time under warranty. The second time they washed out they sent them to Vilco in Tennessee and had them milled out and re-sleeved with Stainless steel inserts. Since he’s had them re-sleeved, he is now experiencing Crank and Rod failures. Could this be caused by the re-sleeving or some other problem? These pumps are about 5 or 6 years old and he’s pretty good about maintaining his equipment. Has anyone else heard about Crank or Rod failures with the 5CP pumps?