Recently purchased a water pressure guage from my honda shop for my '01 BF130A outboard and was shown on a 200hp which they thought would have a similar setup the allen head to remove where I would install my water pressure guage. However, upon examining my 130hp the engine setup was completely different and there isn't any allen head that I can find to remove to install my guage. Does anyone have any idea where I'd be missing an allen screw to install the guage on my engine, or if a screw doesn't exist where I would want to install a Brass T?