I am trying to clean up my old faithful DryRider. I have given it a scrub with some wooly wash and a rinse off with the hose but it is still looking grubby. The instructions say not to use a strong detergent. So what do you guys use, to keep your gear clean? Going away with a very special young lady next week for 10 days of touring so I would like to make a good impression, or should I give up now and say it is a lost cause?