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One other thing I just thought of on these motors. If you bought carburetor rebuild kits (OEM #438996) you will notice they show two different seals for carb body to throttle plate assembly. One is black & other is brown. The brown one is slightly thicker & is the proper one for your GL model engine. Not sure what you get on after market kits. Earlier motors from OMC had to have these seals changed out. Not sure when that occurred, but remember doing a bunch of them.