Get AGI Colt-1911 .45 Auto Armorer's Course&Technical Manual on video.You have to be good at taking and putting together thing's.But I use the tape and Wilson Combat 1911 Auto Maint.Manual and have no problems.I got it at dillon precision products.com And wilson combat.com Your CDP does not have two parts that colt and some others have but this will not pose any problems.I own a Gold Combat