Issues with my robo3d

I have been trying to print with this printer and getting very strange results. I found that the left side slide seems to have only one "bearing" in it so the platform has a bit of a bend in it and the underside rail hits a small protrusion in the rail at times hitting hard enough to stop the printer or make the job fail in some way. Then tonight after working out I could work around this issue by placing the model in one corner about an hour into printing the slide bearing that carries the print head from left to right had both bearings on one side come out tilting the print head. I can't see how they are supposed to be kept in place either. It would also be no small task to send it to you guys as I am in Malaysia. Help please.

 

I tried jamming some waste filament ( I have heaps) in with the bearing one side has stayed but I am not confident it will stay as the other side has already popped out again and messed up the model I was printing.

 

I have also taken that protrusion in the track out with my dremel so that isn't interrupting it anymore.

 

Hello?

 

is there a revised part you could send me to replace this faulty one? It keeps working it's way back out even with tape, makes a screeching sound for a while then I push the bearing back into place (the front one usually) hasn't screwed up the print job again yet thankfully.