Is it the racquet or the strings that cause arm pain?
I play with the Wilson pro open and syn gut normally, last night I picked up a friend Head Microgel Radical MP with rpm blast @ 52lb. I got so much more pop and spin on my groundies and would have swapped racquet permanently but after 10 minutes I can feel my sensitive arm saying NO.
Who is the culprit? the rpm strings or the Microgel Radical?