Do they maybe need running in a bit Neale? I put a DNA on my grinder last week and thought it was pants compared to the pro-gres, chipping really badly, gave it a good run today on some polished porcelain and its cutting as sweet as a nut.
Dont think so Bri, I did do a few more cuts but all the same result. The turbo blade felt as if it was rubbing its way through..hard going where as the continuous rim went through quicker and Monti flew through in comparison.