I would like to ask about the beginning of each rep of this exercise. Is it necessary to let the arms completely straight, or is it allowed to have a small angle? My issue is that if I let the arms completely straight, I have difficulties in the very beginning of each rep, probably due to the L-sit position (because in the normal chin-up there is no issue). This can become quite taxing to the elbows in the long run.
Thank you in advance.