Voice of Nigeria problem with modulation continues

NIGERIA   Voice of Nigeria problem with modulation continues again on May 15.
Modulation of transmitter in Ikorodu is like a Radio Cairo or Radio Pakistan:
0700-0800 on 15120 IKO 250 kW / 007 deg to NoAf English, not French, good as usual
1500-1600 on 15120 IKO 250 kW / 007 deg to NoAf English awful modulation
1600-1630 on  9690 IKO 250 kW / 248 deg to ECAf Swahili awfulmodulation
1630-1700 on  9690 IKO 250 kW / 248 deg to WCAf Yoruba awful modulation
1700-1730 on  9690 IKO 250 kW / 248 deg to WCAf Igbo awful modulation
1730-1800 on 15120 IKO 250 kW / 007 deg to NoAf Arabic awful modulation
1800-2000 on  7255vIKO 250 kW / 248 deg to WCAf English, IKO or AJA, third tx?????
1800-2000 on 15120vAJA 250 kW / 248 deg to WCAf English DRM