you may learn from my errors
1) area - make sure you don't work on too big an area... i find 18" is about right
2) polish - I found I was using too much polish and therefore despite a hundred million passes the polish wasn't actually breaking down!
3) Speed of passes - make sure that your passes aren't too quick... i think about 1" per second is about right but I think I actually do my passes even slower...
The only way I know my SSR has broken down is when it starts to dust... i guess that this is also the case with the megs range? Rich covered the pressure thing but I also made a line on my backing plate so I know if the pads spinning or not! Hope this helps
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