I have bumped a handful of old technical threads that I think will be of interest to newer members that missed them on their 1st run. RWG contains a true wealth of technical information that cannot be found (& has often been copied) on other sites - including the gen sites. These are the types of threads that brought many, including myself, to RWG & kept us here. Many (most?) of the breakthroughs that bridged reps, frankens & gens came from these threads, & many of today's vintage Rolex reps owe their accuracy to the pioneering work of many early & talented RWG members.
Unfortunately, due to the passing of time & other indulgences, I am unable to add much to these threads beyond what they contain, so if you seek additional info, please do not be surprised if nothing more is provided. Also, due to the numerous forum software upgrades, some links may be broken &/or pics missing, so you may need to perform some detective work on your own.
Enjoy.