Tailgater, here is what seems to work for me..I mix a ts of epsom salt in a quart of water, which I put in a handheld spray bottle I get from family dollar for $1.50, this I spray on the blossoms. an old timer told me this (heck I'm an old timer) and so far it has worked. this keeps the blossoms from dropping, and gives the plant a boost. Like you I also use "manure" tea but I have also used compost tea. I like to take mature tea and pour 2 cupfulls per Plant down by the roots, I do this about every 2 weeks. Compost tea should do the same.
Errol