i VEIWED AN INSTRUCTIONAL POST ABOUT REPLACING THE INJECTER NOZZLES ON MY 81 240D. IT SAID YOU COULD REUSE THE SHIM IN TTHE OLD NOZZLE AS LONG AS YOU DON'T MIX THEM NOZZLE TO NOZZLE. i SAW ANOTHER INSTRUCTIONAL THAT SAID YOU HAVE TO TEST THEM (I've ORDERED A PRESSURE TESTER) AND PROBABLY PUT IN A NEW SHIM BASED ON THE INJECTER TEST.. OBVIOUSLY THE FIRST WAY IS EASIER SO I'D RATHER DO THAT IF IT'S THE CORRECT WAY. IF I NEED TO CHANGE THE SHIMS,WHERE CAN i GET THE SHIMS THAT GO INTO INJECTER NOZZLES ?. thanks FOR YOUR ASSISANCE.