Guide great. Spudger good. Thin putty knife good. Blue tools next to useless. They are okay at holding the seam open when you get it open, but useless for trying to pry it open. For that I used the spudger to open the seam, then the blue tool to just hold it open while I slid the spudger along to pry it open further up. Secondblue tool in, then putty knife in between. I would also add that after getting up the first side, round the first corner and over the top, this made the seam on the second side impossibly tight, far too tight to open - I ended up letting the first side close up most of the way and getting the spudger in the second side to get one of the blue tools then the other then the putty knife in. Time to replace battery: 20 min.