You answered your own question. At $7 that's the problem. Buy the higher quality parts you can get. Aftermarket suspension components do NOT last long unless you get the MOOG or RANCHOs. Napa brand stuff lasts a year if ur lucky. They're band-aids. Correct me if I'm wrong these are the bushings that go between the idler and frame correct? to isolate suspension from body.

Also the FSM lists a way to check pump PSI but the special Mitsu tools to check it are long since gone. If it was me, I'd flush it with the correct fluid. (since I've got the equipment to do so) but if you don't have a way to suck out fluid you can take the return line off and drain it out, add the correct fluid, run the truck and continue to do that til most of it is gone. If it's got honda fluid (brown stuff) it's most likely ruined the system. Mixing the 2 isn't good. Kinda like putting green coolant in your DEXCOOL GM. It'll gel up. You can try to flush it out but you may end up needing to rebuild the pump and gear box, pretty much changing out the seals and put red (dex) back in. Dexron isn't expensive and the whole system may use 1/2-3/4 qt.