I wonder if someone makes a cheaper polysulfide.
Dave, can you tell us about the oversized hole method? Its probably a more sure technique.
I injected the thickened epoxy into the existing holes. But, you can't really tell how far the epoxy penetrates into the cavity where the balsa was.
When I drilled through the plugs to fit the screws, a few of the plugs had gaps and needed another injection.
As for sealant, I've tried a little of everything for different applications. Life Caulk in white, brown and liquid varieties. Silkafex, West Multi-caulk, silicone and 4200.
To keep all the various sealants organized, I purchased a handy sealant dispenser pack (pictured below). The dispenser pack was kind of expensive, but it came with six free beers.
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