1987 300 SDL 160000 NEW G-PLUGS INJECTORS,STILL RUN RUFF FOUND COMPRESSION LOW IN #1 CYLINDER...I HAVE GOOD COMPRESSION EXCEPT FOR 1 ,,THE #1 CYLINDER IS LOWER BY 50LBS I GET THE SAME READING AFTER INJECTING OIL INTO CYLINDER,ALL OTHER CYLINDERS APPEAR TO BE GOOD..I ASK YOU GUYS WHERE DO I GO FROM HERE,I SHOULD HAVE ASKED THIS BEFORE REPLACING ALL OTHER PARTS..NOW VALVE PROBLEMS??? IM WORRIED!..THANKS FOR ANY HELP RICK