In my experience there are a couple of solutions to the leaking upper hose. I've found that as the hoses age they get hard (less flexible) and can be difficult to get to seal. The original clamps seem to add to the problem by pinching the hose as they're tightened. Even modern worm gear style clamps, while better, don't seal well especially when cold. Replacing the hose with a new one along with new clamps will fix the problem in most cases. Sometimes you can use the modern worm gear clamps for a while and then replace them with original style clamps once the hose is "seated". Or, if your Model A is a driver and you're not concerned with the original look, you can use a wider even more modern T-bolt full circle hose clamp that will seal even older hoses with ease. They're available at performance auto stores and Amazon.
https://www.amazon.com/dp/B0B87RYQJ1...n_title_3&th=1
