As a small manufacturer I can tell you that this industry is challenging enough in good times. No company is an island and we all rely on vendors. Sometimes it's small parts other times it can be raw materials. Many of these vendors have vendors. I know that some of our vendors are running short staff. Supply chain management, no matter how small a company, is a big part of manufacturing. This pandemic has disrupted our usual flow in many unforeseen ways.
ARC is a great company with lots of depth. No doubt they are readjusting to the new challenges we all now face. They may be facing shipping delays for their tubes. Customer service is one of the reasons they have been successful. Be patient, they are doing their best. You will get them.
Miller, I have lost two family members and have had several family and friends sickened by Covid 19. I am very happy for you to be able to reduce lives to numbers. Your compassion for human life is, well ......