The presidential candidate of the All Progressives Congress (APC), Asiwaju Bola Ahmed Tinubu has dismissed insinuations of friction in his relationship with President Muhammadu Buhari, saying his support for the latter is unalloyed and enduring. Addressing APC presidential rally in Gusau, the Zamfara State capital on Saturday, Tinubu promised to tackle problems bedevilling the state and enhance agricultural productivity. He …