I just searched the forum and couldnt find anything so I hope Im not repeating something here.
Ive always had problems with the L position,whether it being an LSit or an LHold while hanging. I used to have a bad case of cramps,which luckily has passed, however now I have a random shacking,it seems like if my leg had a seizure,I would do LPullups and start of in a V,and slowly go down to a 70 degree hold which would end with my legs shacking. If requested I can upload a video or something.
Thanks