I need to replace the track on my bay window which is 20 odd years old
as the brackets are broken and the present types are different so I can't
get replacement brackets. The existing one is 3.5m long but the longest I
can find now is 3m which will be too short. So far I have tried Homebase and
B&Q. Somebody must have made track 3.5m or longer 20 years ago so why not
now.
Can I get longer track anywhere or should I fit smaller windows and
brick up the gap?

Kevin