Are you sure they are Lp commandos and not small port commandos which would explain why the stock rockers work. Do you know the casting number off them?
part number is 5153850 listed right in the new mopar perf book at large port super commando heads.
the mopar tech (of course not always correct) said that he hears 50/50 on if they use the W2, or standard. Unless guys are using steel W2 rockers on factory shafts with no spacers, they definitely wouldn't work on mine. The cranes i ordered were way too offset on the intake side. The mopar book calls the special rockers (that were never produced) offset .350 . i believe the w2 carries almost a .750 and the rocker body was huge.
how such conflicting info and applications are out there i will never know, leave it to mopar.