Polyphonic synth design: Problems with poly~ and thispoly~

Hey all,

I'm working on a building a polyphonic synth. Only issue is: I can't seem to make it polyphonic. I've read tutorial 21 and skimmed 19 and 20 (although poly looks like it put too much weight on my computer for optimal functioning). I followed the Cycling 74 video tutorial on Youtube and managed to get their simple polyphonic synth working, but I want to implement it with the multi-oscillator synth that I've built. It's working decently in mono but it is just not accepting the polyphonic - I followed exactly the same steps I took to create the simpler one but no dice. The patch and the poly~ abstraction are attached so that y'all can take a look. Hopefully you guys can help me out, although this seems to be a common and finicky problem...