Again, see my first response...
...and on another note, you should really order all of your hardware before starting any builds.
So why not explain the situation, because from what I can tell on your first post, you routed for humbuckers when you should have routed for p90's, but you didn't route anything yet . If you just, in fact, made a template incorrectly, make a new template. That's a no brainer...I think. Not that you'd know this, having never seen a p90 before, but you should be aware that many companies (seymour duncan, kent armstrong,etc) make p90's that fit into a humbucker route. Sometimes they're called p100's. What you really should be doing, if you routed your body incorrectly, is ordering a new body blank. Your customer ordered a new guitar, not a patched up one. Again, I'm not trying to be overtly cold, just realistic.