Can someone tell me what to use to sweeten my ejuice? I didn't know until recently that sweeteners were used, but I have new 1 shot concentrates that really need it. What type/brand do you buy, & where do you find it now with shipping being a problem? (The local vape shop says they don't even have a way to get shipments now, that business to business shipments are banned too. Isn't b2b allowed, just not retail to customers?)