Just started bowling. Went to the pro shop looking for a 12 pound ball. The worker said he would not go below 14. We settled on a 13 pound ball, a Storm Match Up Hybrid. Took my first lesson without any practice beforehand. The instructor said I was really tossing the ball and recommended that I go up in weight. After the lesson I picked up a 14 pound Storm Soniq. Went back to the bowling alley the next day and could barely hold the ball. My hand was slightly sore and weak. Bowled 3 games with each being better than the last. Took a few days off to get over the soreness and went back this morning. Went back this morning with both balls and found that I had trouble controlling the balls. I had to really concentrate on not dropping the ball. Still a bit sore and weak. Definitely not where I was the first day. So, my question, should I drop down in weight and work my way up to the heaver balls, or should I fight through it and expect the mussels to build up to where I would have the same control that I had that first day?