(Gresham, OR)  --  Gresham Police are asking for help recovering four stolen waverunners.  They were stolen from Gresham Powersports and they're worth 56-thousand dollars.  The waverunners were a 2020 model Yamaha FX Cruiser, two Yamaha VX Cruiser HO's and a Yamaha GP.  The suspects also stole two Karavan model trailers that were carrying the waverunners.  Police recovered a U-Haul that was used in the theft along with three lawn mowers that were stolen from another business.