Cornelis, I absolutely agree with safety and functionality being first objective. but just because a car is restored to Concourse level quality doesn't mean it's not drivable/usable (although, to my bewilderment too, many owners deem them so). In many cases my restorations have been known to bring home top honors/hardware, yet my first and foremost objective is always the fact that I'm restoring CARS and before final delivery I do put them seriously through their paces, so that I can be confident in their SAFETY/RELIABILITY and I like to make sure that ALL of it's components and/or even possible rare options are working properly, may they be '50's 16 2/3 rpm record player, cruise control, automatically dimming head lights or rear view mirror, or '57 viscosity fan clutch which also was designed to be replaced and definitely not "repaired/restored", but which I've successfully been able make "as good as new" (if not better by using more developed materials and components), etc...(and yes I know, these are not necessarily Ferrari options, but merely to illustrate a point). And as I wrote before, nylock and many, many more such exercises were (and probably still will be) conducted just to see that it can be done and if for no other reason than to satisfy my own OCD tendencies. Ciao, T.