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maybe u just have too much total. the adj vac thing is misleading. you can't adj how much. u can only adj. how much vac it takes to pull it in. they are pre set. take the # on the the arm and double it thats how much it pulls in when it sees the vac. u adj. it for. some say epoxy a piece of metal on the arm to stop it for the amount you want pulled in.


The adj is for when it comes in not how much it adds. Mine put my total way over 50 I still need to modify to limit total w/vac.,for now I run w/o vac.