Hi all, i have been experiencing bicep pain whenever i smash. I am currently using a mp99 with bg 66 at 23lbs. I tot it was the string as previously i was using bg 80 at 24lbs. However since changing to bg 66, pain still appear. However when i am using my ti10 or arc 10 i do not experience any pain when smashing. Could any of you experienced player please enlighten me why? Is it because the mp99 is too stiff for me? If that is the case isn't ti10 3rd gen also as stiff or stiffer? Arc 10 is strung with bg85 at 23lbs and ti 10 with bg 66 at 22lbs. Thank you for reading my thread.