I just finished my AP as well its a very nice kit.. Don't rush the process, fit before any major trimming. I fitted several times before assembly just to get it all fitted right. Good luck with your build.
Here is a link to an awesome build thread i mainly used before converting my TK build over to TD..
Great detail and easy to follow..
http://www.whitearmor.net/forum/topic/30595-ap-armour-with-anh-centurion-as-goal-build-thread/page-1