High standing tumbling but very low running tumbling

I am having trouble getting any height whatsoever on my running tumbling. My standing tucks and standing fulls are very very high however I can't even get enough height to get anywhere close to a double back. Can someone tell me if it's the fact that different muscles are used in running tumbling vs standing tumbling or that it's probably just a technical problem? 

On the standing tumbling the weight it is axial and there is only a conversion to power (orthogonal to the floor) during the vertical jump. On the running tumbling the horizontal speed it is converted into vertical speed, which makes a big difference.

Almost certainly poor technical execution.

Yours in Fitness,

Coach Sommer

likely you are hitting the floor too vertical, so your speed is being translated horizontally rather than vertically.