Hi,
You won't find them - Cal 1320's sometimes come up on ebay as NOS.
You can buy a good donor 1320 on ebay if you need the mechanical part for around $250USD.
The 1611's are extremely rare now.
Is yours fixable?
I have repaired mine, as have a few other members -search for omega 1611 if you need some threads on here.
We can give some advice if you post photos/what the problem is.