Quest for the One Arm/Hand Chin-up

Well, I’m getting closer. Got over half way up on a one arm chin last night. I also did some work on the Gravitron 2000 and did a workout with my left arm that I could only used to complete with my right arm -

8 reps of 55
6 reps of 40
3 reps of 25

I’d like to get the one arm chin up by Thanksgiving.