Okay I think I can do some pictures now folks.
So here's my first attempt at the Roci, not too bad for my first model build in the best part of a decade and a half but after closer inspection I did make some mistakes. I could get the fine detail on the drive cone right and I made a total mess of the some of the details on it and managed to get the mid section PDC mounting points on the wrong way round.
So mark two was needed, and I opted to make this one a bit bigger to try and make forming the detail on the drive cone easier. I also decided to go for the Tachi colour scheme
Finally the two together
You can see the size difference with the Tachi being 33% larger.
which in turn made it a bit easier for my sausages fingers to form the finer details
Roci on the left Tachi on the right.