For those of you who have used Test Prop/Tren A Blend...what did you think? How can you be sure you're getting the right dose of each? Say...75mg/ml Tren and 100mg/ml Test prop....how can you be sure that your getting that exact dose of 75/100 of both everytime? Couldn't it be possible to only fill the syringe with 25/150 etc..?