DuanePitre wrote:You mentioned uploading photos...
Couldn't see your videos as it said I had to "sign in" to see the video(?), in any case, I think this photo illustrates a potential problem...
Looks like your tendons are being squished by the edge of your guitar right in the most sensitive part of your arm. Try adjusting your posture / guitar so that your elbow moves downward and your hand moves up towards the sound hole a bit more so that the point of rest is nearer your elbow as your tendons are less exposed higher up. You can feel this yourself if you press with your thumb near your wrist and wiggle your fingers then gradually move your thumb up towards your elbow - near your wrist you'll feel your tendons clearly but near your elbow there's a muscle which masks them.
I see that you have very long forearms so you may need to play around a bit to get to an optimal position, but resting on your tendons is not going to help you - you will probably feel tingling in your fingers when you play like this also.
If you can't get a comfortable position and your arm still rests where it is currently, try buying a padded forearm sleeve such as those used in certain sports:
Hope that helps,
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Negative, I am a meat popsicle.