Mark B.
The previous best HTTS model (20130723TipTilt) had two issues: (i) the MOI values from P1100090-v5 were obviously wrong and had had to be arbitrarily increased by about an order of magnitude to match the observed frequencies, and (ii) there was no allowance for built-in ECD. Bram supplied some new MOI/mass values which were more up-to-date and didn't have the divide-by-10 typo. And I added ECD support to the underlying Matlab.
The result is a new parameter set, 20140123HTTSdamp (Mathematica) or httsopt_damp.m r6162 (Matlab). See
https://awiki.ligo-wa.caltech.edu/aLIGO/Suspensions/OpsManual/HTTS/Models/20140123HTTSdamp and ^/trunk/Common/MatlabTools/SingleModel_Production/httsopt_damp.m.
The mass and MOIs are now as-built and the damping parameters have been chosen to roughly reproduce the observed peakiness in TF data from H1:RM1 on 12/20/13 (see attached plots for L, P and Y). The match to the mode frequency is now very good without any fudging.