I was wondering if there were any discussions of instrument maintenance. Not like a bench focus, but like what types of upkeep, lekos specifically, require. Are there any parts worth lubricating, and with what? Graphite lube? Is there anything else that can be done for shutters that are toasted? If you have shutters that don't slide easily, can you lube those too? Is there anything worth doing around the lamp socket (base? base holder?)? Cosmetic touchups? Any other thoughts?