Renfrew paid the price for another slow start after being sent tumbling out of the South Challenge Cup by Cumnock Juniors.
The Premier Division side went into the third-round clash as hot favourites and quickly took the lead from a free header.
‘Frew striker Dominic Innes pulled one back for the Second Division hosts with a fine left-footed finish, but the Ayrshire outfit quickly reasserted themselves by heading into half-time 3-1 up.
