researching it while it seems counter-intuitive, you generally should grease every point of metal to metal contact. While initially it may act as a lubricant it actually fills any voids and increases friction long term. After developing creak in my road bike bars I popped this grease in them and hey presto and the creak was gone, but the bars has marking at the contact point so there is much greater friction there. And no slipping.
Carbon clamping compound ('grease with grit') may be the answer, but I'll try a shim first
researching it while it seems counter-intuitive, you generally should grease every point of metal to metal contact. While initially it may act as a lubricant it actually fills any voids and increases friction long term. After developing creak in my road bike bars I popped this grease in them and hey presto and the creak was gone, but the bars has marking at the contact point so there is much greater friction there. And no slipping.
Carbon clamping compound ('grease with grit') may be the answer, but I'll try a shim first