bifold doors hardware

Hi guys,

After stripping the paints on 2 bifold doors, I am about to hang them using the existing fittings already attached to the doors.
The fittings consist of top pivots which are a sort of rod fitted with a spring.
But unlike the ones I could see in bunnings, the spring is inside the case.
Then there is the jamb at the bottom supporting the doors.
I used to have all these parts when I took the doors down 2 years ago but it seems that the jambs have disappear as well as one top pivot.
So I need to find those parts.
I went to bunnings and in their doors fittings section, they sell rolltrax products and in the rolltrax catalogue, there is a kit for the parts I need.
However bunnings does not sell it.
I went to 3 bunnings, 2 mitre10 but no success.
Rolltrax does not have a website and even rolltrax does not return any result in google.
I am also having difficulty in finding doors fittings suppliers for bifold doors.
I found plenty for sliding doors, etc...
Could anybody help?
Any contact details for suppliers?
That would be much appreciated.
Without those parts, I can not hang the doors unless I reinstall a brand new and different system but I don't really want to do that because they are quite expensive
I live in Melbourne but ordering only is not a problem.
The rolltrax part kit has the number 2860 if I remember correctly.
But I am just after 2 door jambs/supports and one top pivot.
Thanks a lot.
Eric