Convert them all to skidsteer/flushface couplers - probably as cheap as the various other ISO types you can source - and it's a design that meant to minimize all the dripping and drooling:
A year ago I would have had to agree with you. Had them on my loader 3rd function since new. I never had a problem connecting them and could not understand why others did. Then, out of the blue, they started being a pain to connect, though nothing has been changed. Now I'm seriously considering switching to the Faster push-pull like is on the rear.