Every angler has probably experienced some frustration of trying to feed new pole elastics through a wet and dirty top kit. However a quick way to ensure that you never have this frustration again is to simply pull out a few inch of elastic from the bottom of your puller kit and then tie your new pole elastic to your old elastic which is in the top kit, basically using it as a diamond eyed threader.
This allows you to pull all the new elastic through your top kit and you can then attach the puller bead and connector like you would in the normal way. It saves you a lot of time and a lot of hassle so give it a go!