Take a q-tip and dip it in isopropyl alcohol. Then wipe over the contacts of the sticks and over the contacs of the slots. BTW are you sure you used the correct RAM? Tell us about what was already installed and what kind of RAM you installed now (megabyte, speed in ns etc)
The ram sticks are 2 16mb ....I replaced them with a 32 mb simm , i removed all ram and the problem persisted. I cleaned contacts and it seemed to improve a bit but my output board ( not 8 but original.. ) was a bit dirty so I cleaned it with q tip and alcohol.. It seems to have improved doing these steps .. But it is still there.. Could it be OS related? Also I was using MPC PGM made programs at first ... Raw wavs seemed to have less of the problem..