Rattling sliding door

[Badly Drawn Boy]

Hi guys

see video https://we.tl/t-b1PKhK6XCv

I’ve got a sliding door that rattles when opening and closing, it’s not stiff to open but seems to have friction on the bottom rail

I have tried wd40 on it but no improvement any advice would be appreciated

thank you

 

[crank39]

Sorry can't hear any rattle, that clicking type noise is the plastic rollers, they're like a small set of caterpillar tracks made up of rollers instead of the track and they just move around like a caterpillar track is the best as I can explain, the rattle is the rollers that travel across the top that have no weight on them

 

[Badly Drawn Boy]

Thanks for the reply much appreciated