"But Ptsc will receive one half of any settlement minus their share of the legal costs."

That is correct, but IMO don't get hung up on the legal costs.  My understanding is that the deal with T&T (our legal team in TX) was a "pay as you go" approach as opposed to a contingency deal (or perhaps a combo, with relatively small contingency), so the legal cost aspect should be small to non-existent.

Other opinions?

SGE