OUR ONGOING X-RAY STUDIES OF YOUNG RADIO SOURCES INDICATE THAT THE X-RAY OBSCURED SOURCES MAY HAVE SMALLER RADIO STRUCTURES THAN THE X-RAY UNOBSCURED SOURCES WITH THE SAME 5 GHZ RADIO POWER. IF TRUE THEN THIS WOULD HAVE FAR REACHING IMPLICATIONS FOR THE INITIAL EVOLUTION OF THE AGN RADIO JETS AND AGN/GALAXY CO-EVOLUTION. TO CONFIRM AND EXPLORE OUR RESULT WE PROPOSE TO OBTAIN HIGH QUALITY XMM-NEWTON X-RAY SPECTRA OF TWO COMPTON THICK CANDIDATES (1843+356 AND 1511+0518) IN ORDER TO VERIFY THEIR COMPTON THICK NATURE AND ENLARGE OUR SAMPLE OF X-RAY OBSCURED YOUNG RADIO SOURCES WHOSE EARLY EXPANSION MAY BE IMPACTED BY THE ENVIRONMENT.