GALCIT as an amateur rocket propellant?

[Exosphere]

After conducting a few tests with motors using an r-candy propellant, I was thinking about making a batch of asphalt-based propellant (i.e. GALCIT) to test its properties, as it provides an alternative to r-candy that is more dense, has a higher specific impulse, and has a much faster burn rate (potentially making moderately sized end-burner rockets possible). Does anyone here have any experience/advise on the use of this fuel for amateur rockets? Also, where would be a good place to acquire asphalt for a reasonable price?

[Streetwind]

You could try this thread: http://forum.kerbalspaceprogram.com/threads/93433-the-Model-Rocket-thread-Ressurection!