i quoted a job with box gutters ( the picture on my website) and assummed the nozzle would fit in no problem, but when i started the job i realalised the nozzle wasnt cleaing it all out
i ended up hiring a manned cherry picker and had it cleared out by hand, but even they had problems, the gap was that small they couldnt get there hands in, they had to lift the tiles to clear the gutters
I had to pay for the cherry picker out of my own pocket as that was what i quoted
so be carefull when quoting!!