My number one problem with Marx's entire philosophy was his reliance on "Dialectical Materialism," which in effect ignores the fact that economies are NOT static systems. It also infers that we can understand anything, and then change it. And that man is the master of the world, and nothing is beyond his reach. Sort of like saying that if we understand a wild animal we can control it. Interestingly enough, that may work from time to time, but once it doesn't work, bad things happen.
Mark
You are not the only one to have a hard time reading Das Kapital - it is a universal problem.