[bjimster1]

to change the length of the bumper, the best way i know is the following:

if the bumper is in the assembly (.iam)

1. double click it /*so that you are into the edit part mode; everything else is transparent*/
2. double click "Base 1"
3. then click "Extend or Contract Body"
4. click on the face at either end of the bumper
5. click the yellow and red -> <- button
6. specify the distance by which you want it shortened. **it automatically shortens it by the closest amount that will keep the space between the end face and the center of the hole the same. ** /*this is what is happening as far as i can tell*/
7. click ok. /*now your done*/

if you are editing the part in its own file (.ipt) then skip step one.

i hope this helps.