I did hear back from Ruby from Discount Rocketry the other day via both email and phone.
They are still in business... they have been a little sluggish responding due to illness and reduced staff... very understandable. Ruby was very polite and responsive. :clap:
Ruby said that they have discountinued carrying any Aerotech parts or motors. A big part of my concerns over the last few months was that I hoping the buy some Aerotech motors and slotted body tubes, was checking checking Discount Rocketry periodically, only to find less and less Aerotech parts in stock. My fear was that Discount Rocketry was going under... now I know that it is because they had discontinued Aerotech.