Lee 6-cavity mould alignment pins

[cwskirmisher]

Hoping this is not a repeat - if it is, apologies up front.
I have two Lee 6-cavity moulds, and on both, the alignment pins do not stay put - they migrate out into the face of the mould so that the mould does not close completely. I have reseated them many, many, many times to my chagrin they keep moving.
I have 'staked' them, but over a short period of time the steel pins move the softer aluminum and the pins drift again.
I have tried high-temp/permanent lock-tite. But the 800 degree temps I use for moulding seem to affect the LT ability to 'lock'.

Help appreciated - any ideas?

Very frustrating to have to stop every other 'pour' to push the pins back into place.

[Springfield]

Get a center punch and stake them properly. Once done they don't move. I stake all mine as a matter of course before I even use them the first time.

[cwskirmisher]

Get a center punch and stake them properly. Once done they don't move. I stake all mine as a matter of course before I even use them the first time.

What is meant by 'properly' please? I used a center punch, put 3 heavy 'stake' marks around each pin. If I put too much oomph on the center punch, the faces of the mould are 'beagled' in effect from the 'bump' left by the staking.

[excess650]

drill and tap for set screws

[deltaenterprizes]

Roll the alignment pins between a hard surface and a file, the file will "knurl" the alignment pin enlarging it a couple of thousandth of an inch and make it fit tighter.

[41mag]

I'm just curious here, so fogive me if I sound a bit off base, but why the 800 degree mold temps?

[Huck Berry]

Ezcess has it right.... drill and tap for set screws. Way better than peening or punching. Tap & allen head set screws at your local hardware store.

[sqlbullet]

drill and tap for set screws

I did this in about 10 minutes, haven't had an issue since.