Hello guys. I am planning to do a barrel swap on a Montblanc 74 with a Montbanc 24. From what I read, the dimensions are equal and this should be doable. However, I have a few questions. 1: Is the resin used in Meisterstuk line pens different, in particularly cosmetically or durability-wise to that of Montblanc's lower end pens (in this case, a MB 24)? 2: How should I go about removing the piston mechanism? How does it fit and are special tools required? Thanks, Eric