Polyn - if you look up its third manifestation in chambers all should become clear.
Albarine/ pootle - you don't need to change that a. That would give you one more than you need in that area. Sounds like your other change is wrong.
Thought this was great, apart from the Turkey clue, given that is most definitely not a turkey and is never referred to as such.
(There are other megapodes that are, but that ain't one of em).
Loose end for me is 'Disc...' I have a disc, but I can't see the wordplay.