I tested it more and found out that in the MMJOY, button that connected to the first line of shift regisers have no problem, but the secound line have some... (for 128 button, I splited to 2 line of SRs, 12 pcs and 4 pcs, beacuse MMJOY have no option for 16 pcs of SR)
So I think I should split my BB.