I am watching flea's slaping Vedio. and try to play the bass like him. and It is easy to maste the Slap of E string, but it is very difficult to Slap A string, beacause when you Slap A string, you have to keep away from E string,obviously,that isn't so easy to keep E string slience when you "click" A string. Anyone use Flea style Slaping can help me to avoid this? I think the Slaping-thumb is down towards ( not like the up or direct towards ), so it makes me fuzzy that how to slap A string. Thank you in advance!