Hi Crew my new project in 1/24 scale is a PCS ww2 I have a slight problem that I need your help with , the drive shafts outside the hull are 6mm however the props are 4 blade 55 mm M4 thread the shaft size is 6mm so do I run a 6mm shaft with a 4 mm thread for the props at the end , or do I run a 4 mm shaft inside a 6 mm outer sleeve just the outer outside the hull only , with the 4 mm shaft going to a coupler, motors are going to be T12 from Mobile Model Marine which are a 6 mm drive shaft low slow reving trying to keep it prototypical any and all help much appreciated tassie48