Bill,
Going up the scale and starting with G above middle C for a reasonable low note for Trumpet Soloist, is slow. Ab is slow, A is just slightly faster, Bb sounds OK, B is OK, C is OK, Db is very slow, D is slow, Eb is a bit faster, E is slightly slower than Eb, F is slightly faster than E, F# is a bit faster than F, G through Bb are on the slow side but acceptable, B is very slow above the good lower B, C above the good lower C is slow. Most of the notes following the higher C are slow but are acceptable.
I will be much interested in yours and others if these notes are like mine in Trumpet Soloist.
Mark