The Irish table tennis squad got a new coach in 1989 (Harald Mucke) from Germany. He used to call me the great defender and would mould my style in the same way as Korea's Li Gun Sang (watch video below).
I used TSP Spin Pips on the B/H to slowly move over to a tacky TT rubber. The mental side of the game was tougher for me then as sometimes in a close game I would automatically retreat back into the defensive style. I took a long time to stop that but eventually I overcame that hurdle. They say a leopard cannot change it spots, well I was a young leopard who managed to change. If you put the work in then it will pay off. Practice makes perfect - well nearly;)