Hey guys, I'm a noob in training. With practice I have gotten pretty good at bumping open my front and back doors, but I cant seem to bump open a masterlock #3 that I went out and bought to play with. I've searched the forums and read several pieces on bumping masterlocks and even watched a few videos...I cant figure out what is wrong....with the shoulders on my other bump keys taken down they have the springy effect and come out of the cylinder a bit....this does not happen with the master key, It doesnt seem to back out of the cylinder at all, Im afraid to ruin my key by taking off more from the shoulder. That's the only thing I cant think of doing at this point. My key is a 999 cut key cut on a machine, with the tip taken down 1mm and the shoulder taken down .5 mm ............ thanks for you time and help
