Not sure if I could drill out still, but maybe! I think by pulling them back in, you get the wrist angle again - and that is the part that I believe does in my back and neck.
Here is some shots that my wife just took - pardon the non riding gear - sitting in the garage, but you can get an idea of arm and wrist angles
Attachment 23082Attachment 23083
Attachment 23084Attachment 23085
I have no idea why they are upside down, or how to fix that, but they were upside down whether I picked attachments or insert images.