yes i agree !! but i using one bmminer original (no compiled by me) , i don't think that problem for other machine (may be i don't reason), on my S9 i tested 7 x bmminer, i try man !!! lol
on the other hand I am disappointed that no more people try your mod

on paper it is the best for my taste!
Try getting the single-board test from the package and the rest of the files and use your original bmminer with it. Single-board test should be able to overclock any bmminer
About people no trying the mod, probably because I am a newbie on this forum, and there are more established threads with overclocking topic.
Good luck!