Before i chew my parts guy out!!

Well trying to set my valve lash on my 318...the guy gave me magnum 7.5 push rods..my block is a 76 with eddy heads ....now the first time i ordered the push rods i received mushroom type rods (273)i believe...well i cant get within specs these things seem to LONG..help me out fabo..i bought them from vic hubbard in hayward cal...reputable race shop wtf:banghead:

im useing prw rocker arms so i need ball on each end..also the cam is a lunati solid 243/251 @50 and .546/566 lift