I believe you are spot on Beandog, nice post.
I've been keeping track of the T-trades for a good while now and roughly 27.9% of the dilution (based on the increase in O/S from 17-43mil and a large sample size) showed as a T-trade, the rest actually posted intra-day. Using my current numbers, you should be in the ball park, but what I did is FAR from an exact science so take with a grain of salt. All IMO of course
Have a good weekend, cheers!
-RNR350