Hi - we've got an investment property in another state so I cant go and inspect the shower door (I have pictures). It wont open/close freely. I know you can replace/fix up the rollers at the top but according to R/E "wheels" are broken - am assuming there are wheels that suport the door at the bottom. Anyone know this type of door and if in fact there are wheels at the bottom and if thery can be replaced, or do you think she is referring to the top rollers? TIA!