You are on the right track. You have last falls hatch and that's a sign that the summer of culling is helping. I wouldn't add any BG. I might remove some of the large males to make some room for the small fry. Your BG will spawning soon and producing lots of fry and thanks to the cull, many more will be growing up.

Don't know what the RWs of the harvest LMB were, but even at 85 you have removed 30 lbs/acre. I think you are going to see positive results from your efforts but you are going to have keep up with the LMB. Are there many in the 6" to 11" range?

It isn't what we don't know that gives us trouble, it's what we know that ain't so - Will Rogers