I'm in the process of putting my outdrive back together, and the manual calls for using a .025 feeler gauge that's round and long, to check clearance between the gears. I've gone to several boat repair facilities and auto parts stores, and they all say Snap On. I've called Snap On and they weren't able to find anything like it. I can't get the local franchise to call me back, either. Is there a place on the internet that I can buy this thing? Is there something I can substitute (i.e. 22 gauge wire)? Does Snap On call it something else? Mercruiser doesn't list a part # for this tool. Any help is appreciated. TIA.