[Hallicrafters] Grommets for tuning caps

[RJB]

Thanks to all for your responses re the grommets. Personally i plan to
replace em with something, probably will try those gum rubber jobs from
AES - of course this may prove easier said than done - (wot the heck, i just
restrung an NC-300 dial. twice)

As others have pointed out, I see two reasons to have the grommets

1) to reduce microphonics transferred to the main tuning cap
2) reduce transfer of torque from twisting/moving the chassis, to the tuning
cap.

thanks again

Bob