I did well on the August chemistry section, so hopefully that will suffice.
A question first, though: you say you don't feel you learned much in chem 1&2, but have you taken organic yet? It's a must before you hit the PCAT, unless you are really good at teaching yourself.
I had taken general chemistry in 2001, and organic in 2002, when I took the 2007 August PCAT. So I was worried-- none of the material was all that fresh in my mind. I bought Kaplan's 2006 PCAT prep book and started studying, covering a chapter or so each week, a few months before the test. Did lots of review problems, made sure that I knew necessary equations, got a tight hold on all of the concepts, that sort of thing. I also used my old AP Chem study guide (The Princeton Review, 2000-2001 edition) and reviewed several websites that covered the basic organic reactions (SN1, SN2, E1, E2, etc), since neither book covered those.
I ended up with a 99% in chemistry. Granted, though, I had done well in those courses when I took them the first time around, so some of that studying was only mild review. Pay special attention to anything that is unfamiliar, but make sure to look over things you think you know, too. Best of luck to you!