I am not exactly clear on WHAT stack height is, and what my stack height IS. I think it is about 1 inch. I took apart one of the legs and it seems that the problem may be some bad valves. As I have nothing to loose at the moment I am going to try replacing those. Also, the adjuster rod (I dunno if that is the correct term) is bent in 2 places. I don't think it really effects the performance but I wonder if it is better when it is straight. I am totally without a bike.