I see what the problem is. I don't think Bruce changed the design. The problem is in the machining and I see why. They are using slit saws to make the channels instead of end mills. I took mine apart and it clearly shows the slit saw marks. My trusty micrometer tells me the fins width on mine is .82mm, .88mm, .88mm, .84mm, .82mm, .84mm and .88mm. Channel width varies from .9mm to 1mm....
If I were Bruce I would be chopping machinists heads off.
