weather the pushrod used was the same shouldnt concern you as much as why it pretzelled again. id look closely at your lifters and lifter bores, making sure they are not getting stuck. then also the valve and valve guides. assuming spring preasure is correct, check for coil bind and or missalignment. also make sure the oiling system is working properly to these components. a blockage in oiling may be why the lifter is sticking and bending the pushrod. remember too that oil should flow through the pushrod itself. i hope your not planning on just getting another set of pushrods and runnin it, there has got to be something wrong there. look for it. and good luck.