I picked up the 65 yesterday and shot it today. It seems to be working fine, so hopefully should not need a trip for service. I'm going to ramble a bit about it. Got it from the original owner, it was made in 1986 (S/N in 134K range), has some light freckling on the cocking lever, otherwise in good shape, with blue base seal. Now remember why I sold my original 65 as it takes Godzilla to cock it, especially for participating in 60 round matches. At some point when competing with my original I fell off of a pair of skis and broke my shoulder. Ended up selling it and getting a Walther CP2 due to arm strength issues.
That said, I had forgotten how well balanced the gun is, and how nice the trigger functions. I'm 83 and the cocking is a bit of a chore, but the ratchetting lever helps a bunch. My current pistol is a Daisy 777 and is nowhere as point able as the FWB. There is also a significant difference in perceived weight as the daisy feels like holding a brick in comparison. My current impression is very positive. I'll chrony it tomorrow, unless the weather turns crappy, as forecasted.
Overall am very pleased.