changing the string might be the 1st, because the bg80 is a hard hitting string. It will hard to generate powerful smash if u don't have a powerful arm. compare the spec of bs10 and t300, bs10 is head heavy and t300 is just slightly head heavy. So u can try to make the grip smaller a bit by taking off the original grip. If u have done so, then u just go ahead for the lead tape.