strickly from a uf point of view there are very common .22uf cap. available
at .22uf such a small difference should not cause a problem compared to .17uf-. 20uf caps
if they fit… you also have small ceramic caps you can wire in.
I have never workeda kg7 but caps are caps and if they fit they should work. you can even rebuild them see article by M.M.Mohat
https://wrcoutboards.org/wp-content/uploads/2020/04/Part4_Repairing_Broken_Condensers.pdf
Joining AOMCI has priviledges 🙂