Bonjour Thomas,
I had the opportunity to place my order at the start of the offer, which I also did for the future Z01
I like sharing with Jin and use this address : service@okmomodel.com, so do you ?
He always answers to my messages.
Based on what I see :
RETROL & OKMO B01 Hit and Miss Gasoline Engine Model Ball Top Miniature Water-Cooled Single-Cylinder 4-Stroke Internal Combustion Engine with Ignition System and Wooden Display Stand   ...
The B01 engine sold by Enginediy seems the same, why would they change the mold ?