I'm also having trouble with the limited range of the IR led. But the 2 meters you achieved with an external IR led are enough for me. Can you give some more detail of what you've done. You just took the IR led from a remote and inserted directly? On which pins? How do you call it? Just Puck.IR()?
I did this so long ago i can't remember what i did, sorry not very helpful i know.
Looking through my emails i did purchase these IR Led's from ebay so maybe worth a try
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