Thanks for the kind words about the review Dragos.   
I am not sure if this is a case of accuracy or simple typographical error on the supported documentation and subsequently followed by me.
The picture does appear to have three controls which would support the possibility of three engines.  The kit clearly defines three shafts and props.  I did however mention early on in the review two engines and shafts, but the information was actually taken from the same reference you provided as this was basically the only source of information I had available at the time.  The author of the thread does state three engines at the top, but the copied and pasted text from his or her book reference stated two engines more than once.
I have amended the review to reflect three engines for arguments sake.  Not that this was a large point other than color information for the review...but why not?  It only makes sense there are three independents. 
Thanks again!!    
