Hrmmm? Sounds like a project I abandoned when I moved six years ago. I was in the middle of doing a dumbo eared TAKKY with a 575 and it seems to me that the same sorts of things might be required going at it from your direction as well. Dunno, no expert here, but there used to be a lot of info available online for the CC TAKKY conversion which appears to have gone missing. Such made it possible to muddle through my twisted  approach the procedures. You've already got the plastics part of the hack done, so it might be easier! [] ]'>