Seeder Problem

I have stripped the seeder down several times this evening but the seeder is not running properly.All motors are fine and the only thing I can find at fault is the electronic eye that counts the rows.Sleep on it and have another look in the morning.
Alot of organising and ordering today.Another 700 gallons of oil delivered in at just under 70p a litre plus VAT.This cold weather is costing a fortune.
Fixed some glass that had slipped and it was very cold up on the roof.Snow showers and sunny spells all day and very cold about 1C.A frost again for tonight about -3C.