Dodgey scales

3 sets of scales
A) Our old set that I've been using since I started
B) Slimming club scales that are used as a control set
C) New set that we replaced A) with last week due to them becoming faulty

Scales A & B always recored the same weight when either me or the wife used them, the new scales are weighing both of us 7lb heavier.

Last weigh in I was 229 on scales A
This morning scales C have me at 234 a raise of 5lb on the week
Set B have me at 227 which is a 2lb loss on the week and in line with what I was expecting.

Should I enter todays weight as 227 or skip it till I've got some scales that weigh correctly?