I suppose this is useful information, so I copied my post in another thread and made it a title thread.
This could have been included with the Republic Gunship Owner's Manual, but oh well:
1) Do not alter the toy, someday you'll wish it was in its authentic, mint TOY form, so that leaves us with (no scissors, and step 2)
2) extend both threads out as far as they will go, so that they are even on both sides, and straight.
3) grab both threads together, parallel and definitely not twisted, and carfully push them in through the holes they come out of the gunship in.
4) This process will take 10 minutes. Expect that and be patient!
5) The threads will start to go in easy, once you get the hang of it, but when you get about halfway, to 3/4 done, it will get harder.
6) Once they are close, make sure they go all the way in! Then, holding one all the way in, pull on a plastic hook just enough to attach it to the ship. Repeat with the other one once the first is in place.
7) You will have the thread perfectly stored (it is not visible nor accessable through the figure compartment) and none of it will be showing, plus your toy ship will be in mint condition.
8) Effort reaps reward. IMO, the grappling hooks were not necessary for this toy, but I suppose someone might want to make it carry a vehicle like the AT-TE, only something else (an old Kenner mini-rig???) in the course of play. That actually might look cool in a little embelished diorama. Remember the MLC-3 tank?
Anyway, if you follow these directions, you'll have no problem with the rope on your gunships.