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

Reading back through the posts...... there was this:

I got the new locks from Summit: Manley #13151-8 (X2 boxes of em), says on the box: "bead loc for .3110" stem valves use 10 deg retainers standard installed" I mocked one up on a valve with the Lunati retainers & everything appears dead on & tight as opposed to the ~.020" back & forth clearance I had with the prior 8MM locks.

Click to expand...

So, the -.050” installed height version of those locks should fit fine, and fix the problem of the valve tip not sitting proud of the retainer.