Graston is a company not a technique. Graston tools are one type of tool for IASTM.
Message me the city, country you live may be able to connect you with a provider in your area.

Do you have or have access to a supernovito (80mm supernova), supernova or gemini? (Included the Rogue Europe links)
These are great tools that are much different from using a ball.

Have you watched episodes which address the TFL, resetting the pelvis, or quad?
Addressing areas up/down stream help feed slack to the area.