General Windscreen drainage pipe blocked

[altnacraig]

Hi
The windscreen drainage pipe on the offside of the channel at the bottom of the windscreen on my Chausson Allegro Motorhome Fiat Ducato) is obviously blocked, because water is collecting in the channel itself and not draining away. I can't seem to clear it despite using one of those 'drain unblocking wires'. It goes down about 2 feet and then hits the block in the tube. Presumably I'll need to get at it from the other end to unblock it.
Grateful for any advice.
Many thanks

 

[rolopolo]

You don't state year of build, assuming it's 06> x250

There are tiny drain pipes on outside of each washer jet, they always block up as it's a pathetic design,

If you look for my thread posted on Sunday regarding modifying windscreen scuttle against water ingress, you will see pictures of my mod by removing the orig tubes and replacing with good quality garden hose

Neil