Hollow Body & Pullup Pains?

[Echo]

On my most recent workout I was able to achieve a .9 pullup (my chin just could not get above the tree branch!) and I had noticed that whenever I got to that point there were immense pains in my elbows and I had to stop. However, this does not happen when I do chinups. For the Hollow Body I can now do the first progression for a minute, but the entire time I have neck pains. Any help for these two exercises?

[Elastigirl]

Sometimes in my exercises I will shrug my shoulders higher and that causes neck pain. Make sure your shoulders are lowered and a little set back

[161803398874989]

Hollow body does not have retracted (pulled back) shoulders. There's a video in the assassin knowledge base that really delves into the hollow technique. Neck pain is either weakness in those muscles or a form problem. Your head retracted and tucked is what you want, like trying to grab your neck skin with your chin.

For the pullup, I'm very not sure, but could be that your elbows are getting out and back as if entering the transition phase of a muscle up, which has been known to aggravate elbows. Laterally (triceps side), that is. If it's medial (inner elbow), you most likely have weak flexors and the chinup allows you to use the biceps to close the elbow joint, but it can't help out as much in the pullup.

[Echo]

Thanks guys! I'll try to change my form for both.