I have found using the BSI IC-GEL ca from hobbyKing makes things neater and easier to control the over use. The gel is thick and stays where put. I spread a little accelerator one on part (and let dry) with a q-tip and smear a little gel on the other part then put the two together.  I wipe the tip of the tube with a paper towel and re-cap it.   This stuff is great and the tube nozzel  stays free if you sqeuze the tube sides to suck air back into the tube before capping it.  This gel does not work well in places where you want to soak the balsa with ca; but where medium or thick ca is called for it is very good.