That is exactl what i did. Topspin Cyberflash 1.20mm with 21/20kg. But combination of weight, swingweight and 18x20 pattern destroyed my arm. I, m a heavy hitter and my joints are weak and sensitive. The feel, precision, control and power were really nice. Just comfort was not there.18x20 you need to go 45lb max with a medium soft poly... no point using à "feel" racket and string it with 4g at 55 ponds