Malcolm,
I will still be cutting ties today. Having said that. If we don't go the full re-power job, you might consider just replacing the belts and cleaning out the old lubricant. A word of caution, I use the MXL belts and Sunset uses the 40DP. They look like a perfect match but, trust me on this one, they are not. I mixed the two one time and it didn't go well. If you decide to replace the belts Stock Drive Products (SDP-SI) is the way to go. Let me know and I'll get you the part number.
Jay