Anyone rebuild their own diesel injectors?

[AceOfHearts]

I have a diesel Land Rover 110 and would like to check/ clean / rebuild the injectors. It is mechanical injection so nothing fancy. I am having trouble finding someone local who will do this and none of the usual injector places on ebay want to do diesel injectors. I would rather not buy new due to horror stories about pattern parts and plus it would be good to learn something new.

Does anyone do this themselves?

http://www.ebay.co.uk/itm/DIESEL-INJECTOR-NOZZLE-T...