Yes max I am very familiar with ac recharging. I was wondering if anyone has had trouble using the standard connectors. On two different occasions I have tried to connect two different hoses from two different manufacturers and I pull and push and shove and all I have done is lost some of my existing freon. I really dont want to pay a shop to do what I can do.
If you don't have the silicon spray, try just a smidgen of Vaseline or "O" ring lube. Reefer oil would be ideal if you have that too. It takes a bit of force to get them on. Check for any burrs on the fitting, that can hang you up.