Rover 3.9 fuel injectors

[actonboy]

Has anyone cleaned up their fuel injectors or had the job done by a specialist? My G33 is now 28 years old and has never had a thorough check-up and clean-through of the whole fuel system. This I will do but, from my amateur research, everything before the injectors is fairly easy, its the injector end that's the problem. Judging by the many Youtube clips of Heath Robinson DIY methods, cleaning them seems a very awkward job and replacing them costs many hundreds of £. Is there a professional, guaranteed, value for money cleaning service? Any advice would be appreciated.