I got the answer over on the fina board....Like I thought I did the math correct...
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Welp, it goes like this. each 2000mg of tren takes up 2ml of space. The magic is either 5ml for 2gf, 10ml for 4gf or 20ml for a 8gf kit. If you have a 4gf kit, thats 10ml + 4ml(for tren) = 14ml space before adding oil. Now do some simple math to figure out how much is total solution is needed. 4000mg/150=26.66-14(magic&fina) and that means you need to add 12.66 so you did it right . This is not 100% precise, things are going to fluctaute a tad, dont sweat the small stuff.
Zyglamail