I so glad that I found this forum, looks like my kind of place. I've got a Porter Cable FN250A nail gun thats 10+ years old, with very light use and well cared for. The driver is not retracting all the way back now to pick up a nail, and I looked to find that the piston bumper is shattered inside. It also is leaking a little air out the trigger now, maybe related to piston not resetting? Do I just get the bumper or rebuild the whole thing. The manual shows a top kit -60028, and bottom-60009 but I think these have been changed. What I'm finding are Driver Maintenance Kit 60030 & 903767, and Overhaul Kit 903789. I can't seem to find a answer to, do these kit overlap, which is more complete. Sorry for my ignorance this is all new stuff, but I'm willing to learn. I don't fear taking anything apart. Thanks Robert...
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