4ml BA (since you have BA at 2.5%, this is acceptable I suppose)
32ml BB (should be at 20% with prop)
109.46ml Carrier oil (preferably GSO as goin on 4T mentioned)
16g Test prop powder
So I should keep my ba the same and add 20 ml of bb? And I assume tren and test prop are pretty much universal? And the bb is the primary solvent right?
Yes increase the BB leave the BA the same.
Actually test p is harder to work with than tren a. because it has a much higher melting point approx. 250 vs 177 C.