Going the legal route can be very costly in time and money. If they will refund your money I would take it and move on. For props and motors I have used SHIPS N\' THINGS , give AL a call at 908 722-0075 . There are much better motors out there on the market than what would have come in your kit , I took mine out after the first year. For really good motors call FINE DESIGN at 845 342-5102 , he deals mostly with R/C racing boats , but he can help you with a motor for your sub ( I am getting motors for my 32nd P. type 7 boat right now from him ).