I have read through all the old threads here about the problems about how hard the machine is to push on certain carpet [yes i do know about the screw underneath and i have adjusted it up and down as far as it will go .it makes no difference at all] What i want to know is has anyone come up with a good solution to the problem perhaps some way to reduce the suction just enough to make the machine push able.I have a few scrap machines here and was thinking about drilling a few holes along the back of a spare beat up carpet head in an effort to reduce the suction a little [i can hear you all gasping in horror] Any other ideas are most welcome