Hi C Through
only suggestion i have is to find a place where you can run out your hose reels to their fullest lengh and put the pump on full and then run the water through untill you have a full stream
It has happened to me a few times in the past and i have found that it worked for me
I have a truck mounted system and all our hose is always conected to the pump all the time , if thats the same as you , you might need to re reel them in under pressure to stop them from colapsing on them selfs
just a thought
Andy