Or file re-appeal with ACS making sure maa-address probable reason behind that 4yrs deduction (if there is any) from previous assessment.
Note that Respall doesn't charge ala carte or per step consultation. They charge for the whole package regardless of what step you have already completed. I inquired with them before Q3 of 2023) and I can provide their response if needed.
If money isn't a problem, go for an agent to do it for you. If being practical is an option and you are firm that you deserve that addl 4 or 2 yrs credited, file for ACS re-appeal yourself. Minsan nga kasi nagkakamali din ang assessing officer.
