Roller Rockers 1.5 vs 1.6

B3RE said
The radius for the shaft is not machined properly. Check out some recent Speedmaster threads to see discussions about this issue.
Click to expand...

@DentalDart Here's a post showing the issue.

The whole thread is a good read. Lots of answers.

Here's an image posted of the issue:
b70cf2e8-b180-42cc-a4c4-293b98989757-jpeg.jpg