Get yourself a few pair of hemostats - diff sizes and diff shapes, thay are amazingly handy for RC work. I use them for all kinds of tasks - my fav is having to get a 5.5mm nyloc on a screw that you can barely see somewherer up in the assembly, hemostats are great for that!

Can find them at flea markets - I see them at gun and knife shows - cheap. Hospitals go thru them by the truckload and then dump them as used.

PS Pair of hemostats is what I use to push the shrink down while heating - saves the fingers, lol!