Peter,
   While removing a Lightspeed is certainly easier than putting one in, I
just wonder why you're removing it to begin with.  I replaced the right mag
on the IO-540 in my ES with one and it's been awesome.  It runs smoother, I
get better power, easier starts and though I haven't quantified it, I
suspect that it's slightly improved my fuel consumption.
   The only reason I don't have two Lightspeeds (yet) is that I haven't
provided for a backup power source.  Unless George Braly makes Prism
available sooner (hint, hint, George), I'll likely put in a second unit if I
ever have a problem with my remaining magneto.
   Skip Slater
   N540ES