i am CEC inland in all my all paystubs and reference letter we have mention 17$ and in lmia letter $18 as it is after PROffices can conduct verifications by calling the employer as well as the applicant. When you submitted your application, and the work reference letter, the pay that was was mentioned, as well as supported by the T4s and your IT returns is what will be looked into.
Since I am not privy to your documents, this is all I can say.