I 4efte'd my Sera and have no P/S. I think the makeshift piece of pipe I used requires the PS fluid to travel uphill on its way to the pump and its not happening, so I think going with the correct pipe is best!
Yeah the problem I think is getting something with the right bend. I have a piece of straight pipe, but it bows upward a bit and the fluid isn't getting down to the pump. At least I think thats whats wrong!