8MM retainers/locks on 5/16 valves: OK or not OK?

Yeah I saw that myself, that there were no 77110-16's on their site but I spaced that for some reason but today I was thinking that it'd be good to know the part # of the retainers I have (just for reference as my note taking is woefully inadequate) so I am trying to rectify that so I called Lunati & got an older tech who fielded my Q then he saw my flagged order for the 77110 locks & informed me that they cancelled the order because those locks that the young tech picked out yesterday are the wrong ones & that the retainers (75740-16) & locks (77132-16) I currently have are absolutely OK for my 5/16 valves IF the locks are not butted around against each other when installed (which they were not). He sounded extremely sharp & swore up & down that I am good as is! That is the latest. RR