Component Upgrade/Mods to share?

Twl is right on. The failure rate on parts is down right frightening. Most would rather have parts returned than to test each one to make sure that they meet spec. This despite the fact they give themselves rather generous tolerances. Some manufacturers (Dunlavy comes to mind) sorts and matches parts prior to manufacture and then indiuvidually fine tune each finished piece to match a reference model. AlbertPorter I belive the early Snells ( when Dr. Snell was at the helm)were treated the same way. Mixing and matching parts by reputation can be risky. I'll make another food analogy that will humour some. If one just follows a recipe with out considering the ripness (or lack there of) with out compensation they will never excell as a chef (it is chemistry and physics after all). IMHO fine tuning with lesser parts can yield better results than better parts with out fine tuning. While using the best parts and best skills should bring out the best (It SHOULD be easier too). It's more important whats comes out than what goes in. Unless you access to extensive test equipment and know how to use it, mods may be entertaining and educational,but not necessarily an upgrade. Another consideration is whether your work even, if sucessful is devaluing your initial purchase. Many people are turned off to purchasing self moddified used products. You may even void the warranty. With all that negativeity I encourage you to try. That's how this hobby started in the first place. It should keep manufacturers on their toes knowing that people are going to inspect their work and see if their getting their money' worth. Please share your decision/results with us.