ICPI recommends compacting base material with at least an 7,000 lbf rating and compacting pavers with a machine with a 4,000 - 5,000 lbf rating. My questions are: 1. Can you use a 9,000 lbf rated machine for everything? 2. Will it hurt or overcompact pavers? 3. Is there such a thing as overcompacting base or pavers? 4. Are guys that use these smaller units rated at 1500-2500 lbf not doing the job right, or am I missing something in this mix? Thanks guys!