this may be a stupid question: is there a reason piston valved trumpets are not made so that the lead-pipe goes straight into the first valve (like on a flugelhorn or a rotary valved trumpet)? You could then have the main tuning slide on the pipe that came out of the third valve (again, similar to a rotary valved trumpet). Has anyone made trumpets like this with piston valves? It just seems an obvious thing to do, and I wondered why it isn't done. Please tell me if I'm being thick, or if this has been discussed endlessly before.