Has anyone had the opportunity to replace the original power wheel (number and letter combo) with the newer (all number #19908) version? I purchased one as a spare when I ordered my Crown MKII last year, and just assumed it was a drop in replacement, but the lobe on newer version appears to extend beyond the radius of the cutout in the receiver, so it only drops in if the tip of the lobe lines up with the hammer block cutout, limiting its range of travel. FX support confirms it should be a drop in replacement. Maybe it's just an out of spec part? Seems unlikely, but thought I'd ask.