I love the stock length pole, I have a shortened pole and it's ok, but eventually I will be looking for a stock length replacement. I found it to be the best feel and control for me too. I know exactly what you are talking about with the tennis elbow. The loss of grip though sounds much more like the condition I am going through. Tennis elbow is usually isolated to the tendons right at the elbow joint, the loss of grip and arm strength is very similar to what I am going through. I had pain all up my arm, in the carpal tunnel area, and all around the hand. The most severe pain they couldn't isolate, but they did find the torn ligament which was the pain going up my forearm and partially messing with my grip. It was also restricting my range of movement at the wrist...shut it you guys lol. The worst pain though which has yet to be identified is the overwhelming stabbing feeling in the top of my hand. If I try to clamp onto Visegrips, I feel something snap on the top side of my hand and boom, severe pain that will almost bring me to my knees. You may have issues in your hand rather than the forearm. Tennis elbow has never caused my forearms to become exhausted like you are describing, but this current deal has.