I purchased the new Felder ceramic band saw guides for my FP610. Installation of the new guides went pretty smooth even though the instructions provided were only drawings, there were no written directions.
The guides installed perfectly and the fit is first class. The original guides were fine but I felt given the quality of the saw and the fact it is my last one it is prudent to do this upgrade. I also found the time to order a Lennox Trimaster saw blade that arrived Friday afternoon but I haven't installed it yet.