Double check that you didn't kink the line from the pump to the crossmember space and over to the hard lines, when you put the tank back in. I duct taped mine into the space relieved into the top of the tank. I also removed the rubber block that the lines ran through (yours is foam) in the cross member. The space was so tight I had to coat the lines in vaseline to get them to squish through. Also, give enough slack to make the bends easy and no sharp angles.
Current - 1993 Wrangler 2.5 - mostly stock
Previous - 1989 Comanche Pioneer 4x4 Long Bed/Metric Ton Pkg
4.0, AT, D44 w/ Trak-Lok RIP