I understand what you are saying... you are using the adapter... we are all saying ditch the adapter and use the engine as designed. That is the solution. The one bolt prop system is allowing the prop to work the adapter loose causing a failure.
If your back plate has some sort of alignment issues, I would change to a different spinner also. It is crazy to need four attachment points to secure a spinner.
Good luck.
ORIGINAL: hellcat56
''WHAT WE HAVE HERE-IS A FAILURE TO COMMUNICATE'' I just love that line
How about I REDIRECT everyone
like I ask BEFORE
if you dont have a DLE that has the adapter
DONT offer suggestions on how to fix something you know nothing about
its like taking your porshe to the repair shop and thes guys who work on boats start telling you how to fix it
If you dont got one just read and keep your non informed suggestions to yourself
Scaleonly they dont have one-they dont understand