And for just this reason - the alignment of magnets with pickups - I got rid of all my magnet based sensors a couple of years ago. The dual sensors that provide one pickup for both the wheel and the cranks are the absolute worst too. I don't know how Lezyne computers work with sensors, but if you can can go to the sensors without the external magnets, then do it. The aggravation you leave behind is worth the hit to the pocketbook.
j.