Don't write off your barrel trimmer until you've made a few more pens. In most endeavors one must be willing to accept faults and failures, and learn from them, if one is to succeed. It's pretty nice for a first attempt, chalk it up as experience and get back to work on the next one and the next. One day you'll realize that you have mastered them and any early struggles will seem unimportant. Pens are crazy simple if you're already making calls, you'll be a pro in no time. Good luck!