3d modeling for a rubber dog toy -- 2

We have a rubber dog toy that needs minor adjustments made to it. We need a few easy changes made and then all the files sent to us. Stl, and stp and an updated pdf like my current one. Most of the changes are the one in the picture and sizes of the holes and adding an inch in length to overall size. This may lead to ongoing work as our current designer has stopped doing this.