#1
So I have a schecter equipped with a Floyd rose. Apparently a big problem with them is string breakage from the wear of the metal causing sharp edges. I was told that saddle singers could help me out until I can replace it. The directions seem pretty straight forward, the problem is they slip right out and soon as I tune it.

Has anybody tried these and know what I may be doing wrong? It also seems that they take up too much room when I get to the bottom strings. Thanks in advance.
#2
I've always just replaced the saddles (try the Graphtech String Saver saddles) or filed the burrs off the existing saddles.
I've seen the saddle singers, but always thought they were a dumb idea. They're a temporary stopgap at best, they're made of soft brass and they wear out fairly quickly. I always wondered why they didn't fall out when you did a serious dive bomb anyway.