This may be the wrong section to post it but I figured someone here may have had a similar problem. I was attempting to change the gear case oil in my lower unit on a 50 horse mercury and I was able to get off both the vent screws on the lower unit but the drain screw is rounded off bad and will no longer allow me to get a good grip, wondering if anyone else has had this problem. Would anyone recommend a screw extractor for this or would that cause damage? Any info or tips would be greatly appreciated.
Thank you