part one was solved with a hot cup of very strong very sweet tea, rolling sleeves up and getting down to it with a committed "avit, you bstard"..... 15 minutes later and some pain... the old cable was freed of the wire tie.... another 5 and some wiggling and the whole caboodle came out and the string with it. another 20 and the aerial was sort-of in, after i'd managed to make the best of the old knackered seal/mounting knobule and the incorrectly-shaped new ones... a gentle 10 spent wrestling the new cable through the seals, firewalls, and foam tubing to finish with felt positively relaxing in comparison
ah, closure
now to deal with all the other stuff - including getting the stereo back in for starters. it's all doable. just a pain in the ass and a slog that requires muchos boiled leaves to get the impetus up for