allenf1963
buy a replacement tube set now, and an inexpensive tube tester, it will take the dread out of your life, listen without concern!!!
you could install the new ones and keep your old ones that test good as spares. It's always good to have a few spares so you can have music while you research replacements.
test the tubes you buy when you receive them,
live near 07062, I'll test them here.