I never run vintage freewheels like that with non-ramped teeth anymore. With ramped teeth the shifting is 100x better, especially with friction shifters. Much less fumbling around with the shifter to get it in the perfect position. I use Sunrace freewheels and despite the fact that you can buy them for $10-15 they are very good quality. Shimano also makes them but I think theirs are ugly with a black big cog and huge logo.
https://www.ebay.com/itm/18522038986...0aAp8lEALw_wcB