I'm using a GC controller with the Mayflash adapter and am having a hard time figuring out how to do the light shielding (pressing the L/R triggers lightly). I'm able to dodge and shield but only when pressing the L and R triggers the full way; if they're pressed lightly, nothing happens. The L and R are currently set up to buttons 4/5 respectively and the analog L and R are Axis Xr-+/Axis Yr-+. Has anyone had this issue before?

Intel i5-4440
AMD Sapphire r9 270
4g RAM
Win x64
AMD Sapphire r9 270
4g RAM
Win x64