Im trying to remove my A/C hose and I cant for the life of me figure out these dang spring lock couplings. I borrowed a set of the removal tools. Its got like 4 differnt sizes and none of them work. Any ideas info tip tricks anything so I can get this hose changed.

 

That tool should have one that fits, though my kit has two tools that have 4 sizes each.
Just unclip the retainer, force the tool "into" the spring, pops right off. I just did fuel and AC on my wreck.
How far off are the four sizes you have on the tool? Maybe you have the wrong one.

 

I may have to borrow another set of sizes to try to get it off. my friend had a few sets but he thought the set he loaned me was right size. lol Its like 100+ degrees outside in this AZ heat and I think Im allowing the weather to ruin my patience.