mitsubishi d2000

I would like to know if anyone can find main bearings for a KE130 engine. My rebuilder threw all those parts away for some reason and I'm at a loss to find anyone who has those parts. Any help would be appreciated..thanks.

So, I have a D2000 and the hydraulics suddenly went soft. The pump is good, it will lift some weight but when I turn the tractor off, the 3pt hitch falls unless I have the valve under the seat closed. I have, through t-shooting, determined that's it's probably leaking int he control valve...