According to this review, the Razorback can safely be drawn to 30”, so I don’t think you’re going to have any problem with that.
https://targetcrazy.com/archery/gear/recurve/pse-razorback-recurve-takedown-bow-review/Again, it’s not the bow or your strength that determines your draw length. If you are drawing the bow correctly, using your back muscles, you won’t be able to draw any further than your actual draw length. If you are drawing the bow incorrectly, using your arm muscles, you can draw a lightweight bow quite a bit further than your actual draw length. However, maximum accuracy and consistency occurs when you are drawing the bow correctly, using your back muscles.
If you determined that your natural draw length was 26 1/2” by any method other than by drawing a bow correctly to full draw, then it is only an approximation. Once you determine your actual draw length, it might change slightly due to training, age, bow weight, etc., but probably not more than 1/2” or so.
The J draw is a concept to help you visualize a draw using back muscles. It is just a concept, not an actual J. The J is more or less the path your elbow takes when drawing the bow correctly. As you start to draw the bow, your elbow moves back in more or less of a straight line. As you get close to full draw, your back muscles contract about as much as they can, you can feel your shoulder blade moving toward your spine, and backward movement of the arrow almost comes to a stop. Even though there is little or no movement of the arrow backward, your elbow continues to move around behind the arrow, which is represented by the bottom of the J. The J shaped draw is a concept like your elbow closing a door behind you; if it helps you to draw the bow correctly, use it. If it is just confusing, then don’t worry about it.
From previous posts, I gather that you have put a lot of effort into this over many years. I commend your tenacity, but you may have gone as far as you can on your own. I’ll bet that an hour with somebody such as Arne, Rod, or Rick would straighten you out in a hurry, so that might be the next thing you should think about doing.