If you don't get the loops, you could make them yourself.
Take a sturdy wire of the right size,
and if you have an original one as a template,
bend the required number of them yourself.
I built a device for this so that everyone is the same.
NOS on the left, self made in need of paint on the right.
I didn't want to use the original ones because I didn't want to tear the entire heater kit apart.
I also only recreated as many as I needed myself, which is why none of them are for sale, sorry
Regards
Frank