I have an 0lds Special Trumpet made arond 1978. i have owned the trumpet since new when I was in 7th grade. I have never played a pro level trumpet, so i have nothing to compare my horn with. Here is my question, using the 1 and 2 valve combination, I can easily slur up to a C sharp above the staff. using the 1 and 3 combination as well as fist valve alone, I can slur up to the d above the staff. With all valves open I have great difficulty sluring up to the C above the saff and even have to sometimes fight to get to the G at the top of the staff. So, do you think that this could be the horn, or is it just in my head?