This is a question for those of you that replace the original machine strike plastic case/holder with new air tite cases. Are you replacing the newer (larger) cases with the smaller old style direct fit case or are you replacing them with a larger, more like the current cases? Are the new larger holders the same inside and out as the current machine holders? Do the strikes in the replacement cases still move around on the inside like the new ones or are they more stable/secure? Thanks for any info...Ken