I have a 99 Mercury 200 EFI 0G803451. I changed out the impellor Kit last week. I finally got over there today. and hooked up the muffs. The motor started pee'ing through the tell tale after about 30-40 secs. Not a real strong flow, but a good decent steady flow. After about another minute, the motor quit pee'ing from the tell tale, so I shut it down. To start, before, this motor never really peed well running on muffs, but if I drop the unit in a barrel or lake it flowed well through the tell tale. SHould I drop the lower unit again to check out impellor or drop it in a barrel and try it first. Thanks