Eureka ... yep that sum it up . Eureka what have I do ? heavy heavy ! you gotta be a heavy weight Champ with `` BIG gun '' to make this thing move . it propel itself forward , but if it go off course ... good luck . pull this machine back towards you be a `` feat unto itself '' . the attachment be a total pain in the # \*\* . to dial from carpet to flooring be another Task that only the the `` Toughest and Strongest '' should do . I hate this machine . I wish I could RETURN IT , but I already use it ! I be no whimp lady and gent ... but this machine be bulky , clumsy and down right burdensome . the only star I give , be that be suck ... really suck . -lrb- ha , play on word -rrb- - good suction , bag the junk and keep it from fly back into the air -lrb- hepa filter -rrb- , but suck for what I pay for it . I be on a quest for a new machine . any suggestion ?