Hey thanks for your replies,
I will be contacting my tech first thing tomorrow. I am assuming that it is not the SSM2033... VCO4 just doesn't seem to be tuning up properly. Hopefully I will have more information to give. There did happen to be an accidental short (human error) that blew the two fuses on the back board, KLM-376 I believe. After this happened, VCO4 hasn't been able to tune properly. If the short would have blown the 2033, I assume there would be more symptoms... If anyone has any other thoughts, suggestions or ideas; they would be much appreciated. Thanks again!