Sounds like it could be similar to an issue that I had not so long ago, resin escaping from the resin canister and getting caught in your hose and causing build up of pressure, so that you get a very uneven flow.
Cause of it was loose connection in resin tank that came loose from time to time during driving.
Suggest that you unroll your hose and disconnect it and flush it out and empty your resin tank and make sure that all connections are ok.
Don't know if this is any help.