>> Can you tell us the company is that sells the magnets you are using, I don't know what J&K is, need more info.
Click here: http://www.kjmagnetics.com/
Read the material VERY carefully or else you might order the wrong magnet by accident. The direction of magnetism needs to be correct. You will not want the "poles" to be at the ends of the magnet. You DO want the "poles" to be along the length of the magnet. Neat stuff...... Ed L.