Hollow Clock 2 (by Shiura) Reduction Gear

thingiverse

https://www.thingiverse.com/thing:4761858 Shiura's hollow clock 2 is fantastic and I already made it. But common comments for it is that hour ring is slow down. My clock's hour ring is slow down too. Shiura suggests horizontal expansion helps solving slow down problem. Some got improvement and some didn't. My solution is to redesign a reduction gear to be tightly fitted with other gears. I think that slow down was perfectly solved. I hope this stl file helps to solve problem.