Poly FM synth help

Thomas Saunter's icon

I'm having loads of issues with the poly~ objects. I finally got it polyphonic but now the FM part doesn't seem to work. I've taken the reference tutorial from Max but still no dice. Can anyone see if I'm doing something obviously wrong?

Max Patch
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If you're super interested this is what I'm trying to implement it into

Max Patch
Copy patch and select New From Clipboard in Max.