tman, thanks for noticing that. No, that is not normal and is probably a side effect of my molder "packing out the parts" (adding more plastic to decrease shrinkage and reduce "sink" (dimples caused from over-shrinkage of thick wall sections)). I let them know about it, but they likely already know because they're good about that. The MKII knob, however, does have an addition that may not work, but I'll have to test that tonight.