Hii all. I have made it to RC PE10 L pull up and the bottom position is very hard. If I lower myself so that I have straight arms (like the video) and then pull up my right shoulder feels very shaky. i'm just on 3x2 and Last week I pushed through it and felt my should pop out a bit and that was it for me. I am going back to 5x1 this week. The first one isn;t so bad because I can use a little momentum from swinging my legs into the L sit to get out of the bottom but the second kills my shoulder.
What can I do to fix this shoulder instability? I've seen suggestions to do L pull up shrugs. If so, what sort of reps would I do? I don't believe it to be a flexibility issue as I am on HS PE7 im with shoulder width grip.
Thank you.