I just went through my Cat C-1 AFF course; the first attempt I had to re-try due to a weird right hand spin built into my freefall preventing the instructors to release me. I went up again the next day with thoughts that it might have been in my legs, so I focused on them and had the instructors make sure they were perfect. This time was much better however there was still a slight right hand turn built in... they were able to release me and I was stable however there was that slight turn present.
My question, how loose should my upper body actually be? The instructors believe that I may have been a bit too 'stiff' even though I thought I felt fairly relaxed. They said that checking my altimeter could be causing it also, but I dont really move my arms when I check it. I would like some opinions of this and if anyone else had this issue while learning? What did you do to overcome it and become more stable?