You are confusing two separate posts - one was Tin's "fix" to move the PERS system further forward (where the PERS was white,) and the second posting was faststreets' one where he went to a HK store and took photos of multiple heads.
As far as I know, there is no connection between Tin and faststreets other than they are located in HK.
Not sure about the recast thing, but there has been one case where a complete HT release (Wolverine) was counterfeited earlier this year, so it is possible that these "fat heads" could be counterfeit, though faststreets could better comment on the store he shopped at. A PERS head also seems an unlikely candidate to do a knock-off recast of!