Unless there was a rock or something in there... not sure, motor shouldn't jam, it's pretty torquey on these machines. The plastic parts are meant to give before damaging anything serious. Did you back off Micro and see if it ran? The SCG beans could of gummed up the grinder but it would sound more like under a heavy load and not stop, but if the machine is calibrated to "fine" and that low on the Macro it could of really gummed up with really oily beans... possible. Think the shots I pulled today were Macro 9 and Micro H at 16.2g
If you google your own area being in the Pacific NW I bet you'll find a bunchof coffee roasters alone in your area, otherwise there are literally tons online. One of my faves as an example is Fair Mountain Coffee Roasters , but there are tons of them. Redbird has great deals on 5lbs of their espresso but you'll have to store them with that much, I have ball pint size canning jars and I break beans down into batches in zip bags and seal in the jars and stick in the freezer and take one out to defrost as needed.
Any of the SCG beans, you can get from those roasters themselves (pry cheaper too).
CC1 is great to play with, if I do 16g doses I generally use 2 seconds preinfuse and 3 seconds wait, and if I do 18g I do 3 seconds preinfuse and 4-5 seconds wait depending on what blend or if it's an S.O. And I keep the temp at 201. If you don't have a digi scale, get one, you can get them cheap on amazon that way you can measure your doses whether single dosing or taring out the bin and weighing the grinds in it etc (the good thing about Baratza grinders is they rock for single dosing). Also make sure to keep the motor running when moving the Macro or Micro, don't do it when it's off!
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