Back in the mid-1970s there were two Campagnolo components that I replaced on my otherwise all Campagnolo bicycles. One was the seatpost. There's no doubt that once adjusted, the two bolt posts held the saddle position, but adjustment was incredibly tedious! I found my saviour in the French Satri-Gallet seat post. With two Allen recess bolts that adjusted from the underside of the cantilver, it held the adjustment as well as Campagnolo, but was so much easier to adjust. It was one of the few pieces of truly superior French equipment during that era, along with the Simplex retro-friction shift levers.