Hands up, anyone who has wasted a practice session messing around with heavy valve caps and trim in the hope that they will be the answer to all of their problems. And then gone back to what they had on originally. I guess that I am probably not alone. There are some really attractive options out there and there is no doubting their ability to give you a ‘pimped up’ horn. At first glance, these trim kits from Frate Precision are beautiful. A gold-plated refined Italian design with black onyx set into the finger buttons, and black anodised aluminium stems. They are simply stunning. Ultimately though, what will persuade us to keep them on the horn is how they help or improve the instrument’s performance.