It works in an existing CR2?   Try this then:

Set Poser to not use PMD.  Close/reopen Poser.   Open CR2 and save it with a different name.  This should generate a CR2 with embedded deltas.  Reopen CR2 and make sure it stills works as desired.  Open PMDedit - New file and Add Poser - using the CR2 with the embedded deltas as the source. Click the box in the lower left corner if the morphs have PBMCC_ names to get the dial names as morph names.  Delete any unwanted morphs. For sure, click the top of the deltas column and delete any "0" deltas morphs.  Make sure your r & l fix morphs have different names - use the Rename function if needed.  SaveAs the PMD witha new name and generate a new pair of INJ/REM poses for this PMD.  

If - when injected - these fix morphs do not work as desired - ??  In theory it should produce the same effect as the CR2 it came from.

Don't forget to undo the changes in Poser preferences re-PMD.