The way I look at it there are two things that can be meant by the term "bottoming out." First would be where a part of your truck actually hits the ground (or speed bump.) Second would be if like a part of your vehicle (such as the rear axle) smacked against another part of your vehicle (such as the frame.)
okay...well, i've been using the term kinda loosely then. well, this is my problem. i still have my stock bumpstops in the back. i lowered the back 3" using blocks. i'm gonna lower it another inch using 4" blocks. should i take out the factory stops and leave it empty or....cut 'em shorter? i notice that the rear axle does hit the bumpstop once in a while and i'm figuring that when i lower even more...it'll happen twice as much. how should i go about doing this?