My 106 was probably sitting for about 20 years, however it worked before I stored it. so I went through the normal overall: new chips, new filters and some other things. I checked all of the pre-volts checks on the board and they looked good. Had a horrible time calibrating. Thought it may had been my old pots so I replaced all of the pots to set calibration. I’ve made all of my setting for the correct banks as described in Rolands service notes before attempting settings. Some chips will adjust white others peak to peak volts go up and down like a roller coaster on the oscillopscope without being able to set to 4.8 volt or 6volt when required. I beginning to think it’s my new chips from Borish electronics which gets a high review on their AR80017A voice chips. one of the chips has a big fat wave unlike the others that are crisp and sharp. any recommendations on what I may be missing or need to consider?