Have I mentioned lately how much I loathe filling tube spirals?
A lot of the time I won’t bother, figuring the filler primer will do the job adequately. This Aerotech tube, though, I don’t think so; the spirals are too big. I got out my hand pick and opened up the secondary spirals — if anything I was more worried about them than the primary spirals — and applied wood filler. I’ll save filling the primaries for later enjoyment, tonight maybe.