I have the 6-82173 lionchief plus NS GP20 which I run occasionally. Recently I lent it to a neighbor to run and he commented that the horn had low volume. I may not have noticed but he is correct, and I seem to have an odd combination with the sound volume: The bell and announcements are relatively louder than the horn. When adjusting using the remote, they all move up or down in the same relative volume. Is this the nature of the beast and I did not notice it in the past or is there an issue and solution to increase the horn volume? Thanks in advance for thoughts.