Fixing a curved shower door back on its runners?

[BlogOnTheTyne]

We've got a small shower with curved doors that have these little 'wheels' in the metal runners, to enable them to open each side.

However, on one side, the 'wheels' have come out of the top runner and also one of them out of the bottom runner, so that now it's only attached by one 'wheel'.

Doe anyone know how to get all 'wheels' back into the runners, as they won't just push on and in?

Bumping to see if anyone can help? I've managed to get the sinlge wheel at the top to go back in but two of the wheels at the bootm are absolutely impossible to get bac into the tracks.

I've also searched the web and there seem to be no answers there. This is a Bathstore shower BTW and the screen came off it's runners about 2 yrs after it was put in and that's now about 3 yrs ago and I'm getting really fed up with it!

We have exactly the same problem but a bit broke and we just can't find any replacements! Driving me mad....much sympathy. Sorry can't be more help!

Thanks for the sympathy Chigley1. Last attempt here then, to ask if anyone else knows how to get the wheels back on track? There must be a way to do it?