I still have mine. Paid 100 bucks for it in 87’. In 65’ they were $59. Accurate, well made. Problem is getting a gunsmith to take it apart and clean it. Too hard to find parts as they don’t make them anymore.
There are two very good YouTube videos on the breakdown and reassembly all the way down by the way of the Nylon 66. I will track them down and post the link later
He has 2 part video on full take down and 2 part on full reassembly. I downloaded all 4 and saved them. I'm going to set them up to play when I do the job. Not looking forward to it, but it appears to be necessary:
https://www.youtube.com/watch?v=0LAYP0GB6eU&list=PLh02P-p33IrIRNBy5m_HZ-tzJEzepiWdl
Also, a parts source for the Nylon 66:
http://www.gunpartscorp.com/Search.htm?s=nylon%2066