How did lacroy

come up with the 50 perent secret ingredients, 50 percent none in TE and NPA/m products?

it seems to prefect,

and more like they just decided to make it half and half. On the other hand, I would think they must have put

effort in finding the optimum relationship, but I am not sure how much testing they could have done.

That said,

is tinkering with the 50/50 relationship by adding PI going to offer diminishing returns, or is the 50/50 thing not

well established as the optimum relationship?

I say this because I know the secret ingredients are there to make

none more effective.