Royal Mail module pricing help

Hi

I've added an Item weighing 8kg and enabled Royal mail 1st class and standard parcel.
In the 'Shipping Method' Page I get the options below :

First Class Recorded Post (Weight: 8.00kg) (Estimated Time:) £17.12
Standard Parcels (Weight: 8.00kg) (Insured upto: £1.00) (Estimated Time:) £13.79

I thought the first option would not be available as 1st class can be a maximum of 1kg ?
On the second option why is it only insured up to £1 and not displaying estimated time ?

Thanks

The Royal Mail module included does not use live rates. All rates are hardcoded and outdated from what I understand