Al,
i had the same problem with the electric guitars. The attack seems to need tweaking. Uncle Dave is right about the bend wheel. Using the bend i can play pretty cool riffs on the keyboard (Lenny kravitz, zepp, whatever) If you have a jv1080/2080/xp60/80 there is a patch somewhere "Rock your socks" With the bender and a good technique is sounds better than my Strat which i think is amazing. All my guitar playing friends would not believe that the sound was coming out of the keyoboard. The patch sounds like Gary Moore's sound on parisiane walkways (i think). Lots of feedback and sweetness.