I bent 2 pushrods this morning. I adjusted valve lash yesterday. thought i did it right. I started up today and was going to verify adjustment using method of loosening till clatter, then tighten back down till no clatter. After a few minutes while i was working on driver side I heard knocking on passenger side. shut it off and noticed 2 bent pushrods. I am wondering if I need guide plates for pushrods. I have roller cam (cca-8-433-8), aluminum heads, centerbolt, angleplug, 58cc, that do not have the individual holes for each pushrod, i also have rollertip rocker arms (cca-1417-16), standard length pushrods (cca-7808-16). I bought this engine as a shortblock then started buying the additional needed parts. Any ideas?