It sure is not easy, but if you have just a little patience you will end up with a very nice product.  My wife and I do not use the heater, but we love the warm feelings each night when we turn it on.  It turned out to be a far better product than we expected.  The flames and the logs have adjustments the get brighter, or to just have a nice amber appearance.  The end result was well worth the problem of putting this together.