Loose Lower Unit Plug

[Mr_Shamrock]

I was giving the boat an inspection today for the upcoming weekend and notice a little gear lube around the level (upper) plug. I put a screwdriver on it and it was barely snug at best. I know it was tightened the last time I serviced the lower unit. Has anyone had their drain plug loosen up on them. I went ahead and serviced it again and although I didn't measure what came out there was a lot in there still and it wasn't contaminated. I used new seals last time too. Just one more thing to keep an eye on.