I have installed and put many miles and hours on my FASS Pusher pump it is now getting time to change the small filter that came with it that is inline before the pump ,where can I find the replacement for this filter? pump is runnning great still need to take a few hours to some small mods like relocate the fuse holder and put a 90 in on the exit side of the pump and install the splash guard to keep water/mud off of it from the rear wheel.