First off IIRC C1 is a 105 deg C & the others are 85 deg C.
Look at the old C1. If you use a lower rated cap it will NOT last
long. The new C1 probably got stressed out when wired wrong &
is the cause of your ripple.
After the ripple is fixed next step is the vert so if you are ordering parts
you may want to order the vert tube. Should be cheap as its
pretty useless for other apps.
73 Zeno
LFOD !