Has anyone heard of a Dynamic Inlet Kit? Some kind of kit that uses diffrent screens for the water intakes to help with water pressure. I cant find any info on them. Also my 2000 model Yamaha 3.1 OX 66 has a discoloring at the exhaust right around where the lower unit bolts up. Dealer said it was from hot water out of the exhaust due to motor set up so high (1.5 below pad now). Any ideas on how to clean this up to get orginal color back? Thanks.