Thank you, Lin for your response.
I must say, as graphic designer, the lack of control offered in Power BI over basic layout considerations is baffling, and thoroughly frustrating.
I have tried to apply your solution, but I had to make the chart so very tall it looked ridiculous. And once published, it still cut off the numbers on the y-axis at the -5/+5 range.
I then tired to remove the numbers altogether (so only the lines would be visible) thinking the numbers would display when hovering over each bar. But when you remove the numbers, the lines go away, too, and that's also a non-starter.
So I thank you again for your advice, but I’ve going to have to find another work-around.
I did vote on the two links you sent—maybe this will be addressed eventually, but likely too late for my needs.
Have a great day,
Deanna