Magnetising the Manticore

I've been looking for a heavy support choice to complete my 875 point Imperial Guard list for the upcoming tournament, and today an assembled, unpainted Manticore landed on my workbench. The prospect of landing D3 strength 10 pie plates per turn makes this vehicle an attractive prospect.  To avoid burdening my memory during games i decided to magnetise the missiles so i could remove them during play.
You'll need 8 small neodymium magnets (i used 3mm but 2mm might be better), an appropiate sized drill, a scalpel and superglue.
For the missiles, pare away the reinforcing strip halfway between the slots and drill a hole partially into the missile body. Don't go all the way in you just want a countersunk hole for the magnet to sit in.
For the launcher rails you just need to trim away enough plastic halfway  between the tabs to house the opposite magnet.
Before gluing in the magnets make sure you have the poles matched up so they actually attract each other.  Let the glue set and enjoy your magnetised tank... check no one is looking then make 'vwoooosh' sound effects as you fly your missiles across the room and explode them amongst an imaginary xenos horde.  Everyone does this right?
I'm planning an airbrushed camo pattern for this tank, i'll post that up soon.