Depressing isn't it? Your mills behaviour is mirrored this side of the pond every time I switch it on. The clunk at power on, the pulsing of the spindle, the reset and then hopefully nothing.
I can possibly go one better! Seen this one yet? Run your program and on the first motor on command it'll go to the requested speed in reverse and then when it achieves the speed, or more accurately, the speed a good few hundred rev's below requested, it'll suddenly flick direction. Always a crowd pleaser that one...
If you're having no luck with contacting Syil there and in China, then I'd say we're going to have to get used to the taste of lemon.