Sean's right on with his suggestions. Don't try to save $10 on a multi $K jet.

I bought the BVM aeropoxy kit and got in with Kevin when he bought 1 million tubes of Hysol for everybody (I like the grey 9640F better). Art's has a [link=http://www.arts-hobby.com/store/aboutitem.cfm?itemid=102&compid=1]starter kit[/link] for $40. The tips can be reused. Just pull the mixing helix out with pliers and put the tip and the helix into acetone. It will break down the epoxy and be ready for use the next time.