Hey Nicklouse.
Nice pics from a good project. Respect.One question. Are you sure your grooved and drilled brake discs are mounted the right way. I've seen them often mounted the opposite direction.
CU
good question and i could understand your confusion. yes these are fitted the correct way around. But you will see other brakes with groves or holes machined the other way. it all comes down to the makers and the use and even the year that they were made.