What do you mean by this: "my product tag evar is page load evar" ?
Instead of providing your problem in bits and pieces, can you please
provide all of the following: your current implementation, e.g. how your
eVars are being set in code or in your tag management service a sample
beacon hit to AA's server showing all of the eVars that you have
problems with That will help us to troubleshoot your problem more
effectively.