AudioVox criuse varying speed

[Challenger]

I've had The AudioVox cruise on my I/S for seven years with no problem, lately it has started hunting. If set at 65 it will slow down to 60 for a few seconds and then speed up to 70. Then slows down to 60 and so on. It takes a bout 20 seconds for the cycle to complete slowing down and speeding up. Have checked vac and electrical connections. Does this sound like a servo going south? Where is everyone running the dip switches on their units? TIA.

[Keitho]

Not sure if you've seen this link or not but it shows the Dip Switch settings this fellow used.
Hoping it'll help you!
http://www.valkyrieriders.com/shoptalk/cruise-control.htm