Whats up with my weights? (Autodesk Maya 2016)

No.500532 ViewReplyOriginalReport
My rig deforms properly (with a few exceptions being the forearm) but when trying to paint the weights on the rig it shows up with the weights unevenly spread all throughout the rig?

Why is this happening? is it worth re painting the weights or is there a simpler solution to this?

>pic related (its the rig with the bad weights)