Hand crafted distortion and tca because the hugin generated values were off by about a factor of 4... 4x too weak distortion correction and 4x too strong tca correction.

--- addition ---

After more investigation... It turns out that UFRaw is having problems applying the correction. My current suspicion which I've raised with them is they are not taking the crop factor of the lens/sensor into account.

As a result the above numbers work for the buggy UFRaw but will not work once fixed. This is evidenced by trying to use these numbers in other applications like DarkTable. This also explains why the hugin generated numbers appeared to not work in ufraw.