80-200L Repair

Has anyone taken their 80-200L apart? My switch isn't broken yet, but one day it will, but mainly I want to lube the lens because the zoom is getting kinda stiff and I'd like to clean it out a bit. Any pictures, instructions, or tutorials would be helpful.

So far I have only seen shots of partial disassembly of the drainpipe on these forums. I can't recall seeing any teardown guides. The last thing I remember seeing was someone trying to figure out how to make a replacement switch part.

I tried doing some searches, but I haven't been able to find anything.

http://forums.dpreview​.com …rum=1029&messag​e=12595012

Here it is partially disassembled. You can check the replies to see if there is further information.

Thank you!