On a Pro-V 115 1993-1995 (2 stroke) can anyone out there with a functioning Speedo measure the exact depth of the little hole in the lower unit for me with a wire? I cleaned it it seems all the way back, no more sand aluminum corrosion is coming out, but still I can't get much air through it with the air compresor. I also ran a wire down from the top vetical channel and it passes the threaded nipple and keeps going but does not seem to quite reach the horizontal Speedo channel, but again, not a trace of corrosion coming up on the wire.

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