looks like i figured out the "missing nonces" and the "unhealthy miner" errors i was getting, i got my stick from Amazon.
missing nonces is probably your share is not fast enough for your pool, so getting a fan and speeding up might fix it?
unheathly miner i am guessing is that your chip is too hot? I just upgraded my cgminer to the newest one from Dec 2018 - the one linked in then PDF that came with the chip is an older version.
i used this code to get it started:
cgminer.exe -o stratum+tcp://us-east.stratum.slushpool.com:3333 -u xxxxxxxxxxxx.xxxxxxxxx -p x --gekko-newpac-freq 100 --suggest-diff 512 --balance
after a couple of days messing with it, and reading through this fourm, make sure you have the most up to date cgminer, a fan, a powered usb, and you set your start code correctly.