Bob, I suspect the biggest problem is prevention, and having good stuff to begin with, we all aren't "equipped" with the magic it takes to keep a vintage piece ready to go at any moment. Proper storage is a must, dampness and moisture are the worst enemy of anything mechanical. Lord only knows the number of parts in these vintage machines, that this effects, certainly the fuel system, and electrical are the most vulnerable, and how often they are put to test has a big influence on whether or not they will fail, and to what degree. Magneto's should be kept DRY, and putting a plastic bag over one, is probably the worst thing you can do to store it, and the fuel system, always use fresh fuel, if you're using gas, put Stabil in it, if it's alcohol, put Klotz upperlube in it, I let mine set out one whole winter, in the trailer, and had no problems with the fuel system, but bad fuel will wash all the good luck away in a hurry, buy yourself an alcohol hydrometer, and ck the fuel you put in it, that will certainly help, and if possible, even if you don't start the engine, disengage the fuel pump, and circulate the fuel thru the system once in a while, just disconnect the fuel lines, and let them flow into a pan, then throw that fuel away. Call Hilborn, they have a book on fuel injection, and how it works, could answer some questions. I'd say at least 90% of the problems people have, after they get to a meet, could have been found long before they loaded up to go. There is a lot of info out there, and a lot of it hasn't been written, but a good plan for maintenance will go a long way toward a happy weekend at the track! Bob