First, I got this at a deep discount, so am writing a review in context of the price that most pay. So lets start by saying that the instructions are crap. They have useless drawings and even have errors in the text. (mislabeled parts-top block vs. front block) Again, I had to giggle since there are only a dozen parts to put together,so it should be a cinch, right? Well, my friend and I were laughing at first and then later we were just plain annoyed at why this should be so difficult. My friend is a process engineer and writes complex instruction manuals for a living. he could not believe that any quality control was asserted during the writing of the manual!