Ah .... well .... if they were mine, or if you were my customer, NO.
My question is, are you replacing Kirst Konverters with Percussion Cylinders?? You didn't really explain?? Or are you replacing Kirst Konverters with more recent production Konverters??
If the cylinders you currently have in the guns are trash (Pencil Holders), and you don't plan to return to the original percussion cylinders, then the simplest thing to do is relieve the breach end of the barrel to re-establish barrel to cylinder gap.
Coffinmaker
PS: insure the bolt is fit to the cylinder notches before the guns go back into service. You really don't want to know my opinion of "Slip Hammer."