The symptoms are now on the '73 and worse than when on the '72. Upon the swap of racks, the '72 immediately ran fine. These are the original injectors from when I bought the car in 1980 and have used ever since. When I bought new injectors, I put them on this '72 and moved the originals to the '73 where it ran fine with these originals from the '72. The "new" injector rack went on the '72 and progressively went bad ( splashy idle and high speed intermittant miss). I swapped the originals back to the '72 and the idle became great and no miss at any speed. The "new" injectors went on the '73 and I drove 5 miles and it ran poorly with a steady miss that night but it got around ok with one obviously dead cylinder. Next morning, only one or two cylinders would fire and I had to nurse it home after less than a mile. Now I get only one or two clicks from the injectors over the range of the trigger contacts (not 20). I'm thinking they are clogged or have debris in them and will blow them out with cleaner and air this weekend. Is there a better way to clear these injectors? How can I only get "one or two" clicks now? I only changed the injectors and didn't touch the wiring or the grounds. I am still thinking about those SU's and creating an ample parts supply.