Hello first I want to apologize for my bad English I hope I will not bother you.I've been trying for a long time to create sounds that are in mono legato mode portamento but I do not succeed, the second held tone always attacks too hard and hard sync with portamento it's a very bad time when he wants to be more to the next tune and his attack overtakes him.I would like to get the effect of the mono legato function as it is on Yamaha PSR 970 would you help me how to do it. thanks