Kathy found a site online (https://www.outwater.com/products/lfthn-110/
) that sells hinges like came in our Interstate. I attached a photo so you can see what we now have. I do not know if newer models are using the same hinge. Following a link (click here to view in catalog) on that site got me a Blum catalog pdf. It did not open to the page with that hinge and I did not find the current hinge in that catalog. I then accessed the Blum 2020 catalog (https://publications.blum.com/2020/catalogue/en/72/
) to be sure I had the latest models. The best fit to our cabinets I could find is their AVENTOS HK-S (20K2C00). It opens to any desired angle from 75 to 107 deg. The -S is for small doors. There are different models for different size and weight doors (lift factors). The above model should work on our doors. It is soft closing and can apparently be adjusted to stay put at various positions less than full open. My thinking is that the soft closing means it will have resistance to opening by shifting contents inside the cabinet. If not adequate, they do have push to open type latches that might work. The hinges come in pairs (two hinges per door) and the brackets for the doors are sold separately. There are videos online showing how they are installed. My main issue is the price. The best I could find is $33 plus ~$2 for the brackets (175H3100) and ~$15 for shipping. The best seemed to be Indian River Cabinet Supply (ircabinetsupply.com). Another complicating factor are the curved cabinet doors. The hinges are expecting a flat vertical door surface. I think one might need to build out the hinge attachment sites on the doors so the hinge has its expected door attachment location. If anyone finds something else or tries these I would be interested in hearing. Do the latest model Interstates have the same hinges as ours?
Best regards, Randy