|Hi. I have been through David W's thoughtful piece in Black Arts on Genoa Track replacement and repacking balsa core w epoxy around hardware fasteners.
Problem that I have is much more extensive moisture and balsa decay.
Approach taken so far is to cut a series of rectangles (about 4 inches long by 1/2 in. wide) in the deck under where the G-track is to be re-bedded. Through these rectangles, and a variety of adhoc tools, i have been able to dig out old, wet, decayed balsa, in some cases leading me to excavate 4 inches or more from the track location.
I will spend more more hours digging, and eventually plan to refill deck cavities with epoxy (i feel like a dentist dealing with some really bad teeth).
Questions for you are:
1) Is this approach "good enough"? I assume after refilling core, epoxy mixture will certainly be lots stronger than rotten balsa (or air). The C&C wont be used for high stress racing, but don't want G-track to go flapping in 15 knots of wind on weekend cruise. Cosmetics are not high priority.
2) Fishing through the rectangles to extract old balsa is not perfect. What is risk of leaving some wet/decayed balsa some inches from G-tracks. I assume highest forces will be near G-tracks, not inches away.
TS&CC, 1981 MkIII, Hull 886