Just bought an as new SBT Seitz. It has a release trigger. With many other brands it is a simple process of removing the hook to convert to pull. Is hook removal all that is necessary to change the Seitz to pull? If not, will I have to have Seitz convert it? I will not see Richie until he heads for Fl for the winter shoots, but that is a long time to wait to shoot a new gun. Any help appreciated.