Bomb settings Help Please

[Scrapper]

I have issues with being able to drop single bombs one at a time. I was told that I could use Windows Key + B Key to do a single boob drop but I just get the options changing each time I use the B Key. And it will not stop at any one option. Windows key + B key cycles through different amounts and doesn't stop for just a single bomb drop. Thank You for Any Help in Advance ~S~

[Zooropa_Fly]

The default for dropping a bomb is just 'B'.

And default behaviour should be to drop one at a time.

What's mapped to drop bomb in your weapons settings ?