Master Model of Poland has been making turned brass and aluminum gun barrels and pitot tubes (among other items) for several years now and turns out some outstanding replacement parts for aircraft, armor, and ship modelers. All of their products are reasonably priced as well.
Adding to the Air Masters series, Master Model of Poland has a simple replacement part for that 1/32ndscale Kitty Hawk OV-10 Bronco that is languishing in your stash. And all for the want of a descent pitot tube. I say that because the pitot tube is rather prominent on this aircraft.