I’ve had a ~1959 Rolleiflex 3.5E for at least 10 years and just recently got it back out to start up with Medium Format. It’s probably had 2-3 rolls through it during that period and is a tiny big gummy, in other words it could use a CLA, but I’m too cheap to pay the $250-350 that they cost right now. So I got out a roll of Delta100 and ran it through and developed it (for the first time in at least 20 years) in HC110 Dil B for 6 min.
The photos turned out fabulously and these are the two of the nicest. Working with a TLR is quite different than digital or an SLR, but it’s not hard.