I second what Bader says...2-3% BA and the leastr amount of BB as possible. In my tren I am not even using BB and it holds just fine. On my prop I have to use a little or else it falls out of suspension, butr even then I use 3%. I have come to believe that a lot of sides can be attributed to too high levels of solvent. But again there are many views out there, for me less is better.