After 5 months of testing, we have a prep. It is called Xtreme Tire Treatment.
It can be used inside or outside. It is orange in color with very low smell.
Will drop hardness of tire 30cc=3 to 3.5 points.
When used inside nitrogen should be used to pressurize the tire.
Roll for 12 to 18 hours.No heat.
Max 120cc right sides 75cc left sides
No re-rolling needed.