Signature Tags Misplaced using X/Y coordinates on Document

Hi, I am currently running into an issue with utilizing X/Y coordinates to position signature tags for documents in eSignLive. In our system, we have our document creation source generate annotations on the PDF near the signature location which we then use iText to extract the X/Y coordinates from. We are currently in the process of upgrading from Silanis e-SEP on-prem to the eSignLive. These X/Y coordinates matched up with our signature lines in e-SEP on-prem, but they are inconsistently either above or below the signature line in eSignLive. Is there any document scaling difference between Silanis e-SEP on-prem and eSignLive? Is there anyway you would suggest getting the appropriate signature locations? Unfortunately, we are constrained to using iText and X/Y coordinates, so we can't use anchor text. The only solution I've been able to think of is creating X/Y offset values for each form, but this would be a laborious task and probably a last resort fix.