Hi there,
I have a completed, weighted character mesh, now I want to add a little bone under the arm to move the back very little. 

When I use the “Add Influence” option - I’ve tried every setting.
It puts a lot of extreme weighting on this little bone and ruins my weighting in the arms, shoulders, back, etc. 

Does anyone know how to add this new joint into the influence of the mesh with just the bare minimum of weight, so I can slowly, gently Paint Weights onto it and carefully grow its influence in a small area?

Please help, I’m running out of time.  Thanks in advance.

Autodesk Max 2010 (sometimes I use Max version 8)
Maya 2011, Mudbox 2010, Motion Builder 2010, Windows CP PC Pentium 3.4 Ghz, 2 GB RAM

Hi, when u do add Influence click on weight locking check box, keep it in on,
select the new joint then geometry and turn On the weight locking then apply, so the new joint wont effect on the geometry,and later u can paint manually.
Try it once and give rply.

Krishna