I bought an SRT in Sept 2017. The Skreem had been replaced in Aug. 2017 (I saw the receipt and had bought from a trustworthy forum member, so I'm confident the work was done). I had to replace the Skreem in Nov 2017. I'm guessing that was an aberration. Chrysler is sometimes backed up in producing them. I ordered one for my NA at the same time to have it in case. I just ordered a backup Skreem for my SRT. Having owned Crossfires less than 2 years, I can't honestly comment on "matter of when and not if". I just know I want to be prepared "in case". Daily driver? I'd buy a backup in a heart beat, assuming it wouldn't take food off the table.