The trick to cleaning cuffs is to get some McNett or Nikwax Techwash and pour the stuff straight onto your jacket. Use a toothbrush to agitate the area by lightly scrubbing. You'll want to leave the jacket with the soap on it for at least 24 hours, then wash it according to the instructions of the soap. You can also use Dawn or Joy dishsoap on spots that have oil residue - like the collars of your jackets. If you use this type of dishsoap you'll want to follow with another was in the gear soap (tech wash) mentioned above. Good luck!