I generally use clip on tri bars for….triathlon and training and they make a difference of 1-2mph at about 16mph. It is achieved by the lower and narrower position. The lower position could be achieved by riding on your drops but this puts alot of pressure on your wrists for a long period, therefore, better to spread the weight on your arms. The lower position compromises your force output and breathing so this can negate any aero benefit. You can get tri bars that clip above, below and level with the bars.

It is disk rear wheels that only become effective at 23mph. (Don't put one of them on for commuting!!!)

I’ve lost all the info. i had on this, the only thing I’d say is that it is worth doing as I have the misfortune of having two inches of seat post in the seat tube of my road bike after it got stuck and I had to knock it in, rather than pull it out. Pretty sure Scott make a carbon specific grease.

Last lot of cones I got were from St John Street Cycles, not sure exactly which cones they are but you might be able to match them (if they’re still doing them – haven’t checked)

I’m gonna come to this one!