Good to see TonyB still with his Polystar energy @ low tension. I must thank him for introducing me to this wonderful configuration. I had a passionate love affair with PS energy @ 35 lbs on my KPS.
Perhaps it is time to try it on Vcore89.
How is QC on Vcore89? Should i spend the extra $ to ask for matching service?
"Can you pass the car ahead of you by following it's tracks?" - LeeD, Talk Tennis Guru.