Sliding window help!

[Iceworx]

Ok, might sound a bit daft this, but my sliding window is really rough to open...

the first few cm opens ok, after that its near on impossible to slide it any further..

Anything I should check for? or anything i can do to ease it up a bit?


thanks

[rainman]

how long have you had the van? when i first got mine the window was stiff but I cleaned out the rails and then it was fine, could that be it?

[Iceworx]

I've had it about 9 months.

although most of the time, its been sat in storage.

I shall check out the runners tonight, they looked clear when I checked yesterday