Pouring tail weights directly into plugs

[Diggin Jiggin]

Does anyone here pour lead for tail weights directly into your plugs, and if so, are you sealing before or after ?

I am worried that the heat from the hot lead would burn out the sealer, and on the other hand if the lead was in there first the sealer would not be able to get under the lead to penetrate the wood.

I've poured belly weights this way before and for those I'm not sure it mattered as the belly holes get covered, but for a thru weight where you know water will get in there it may make a difference.

Anyone done this before ?