Replaced valve stem seal, but still leaking

Success! Sort of

The good news is that the valve cover was the source of A leak, but it turns out not the only leak. I stripped the threads on the bottom bolt of the cam chain tensioner, and now it looks like I have a small amount of oil coming from there as well.

Should I get a heli-coil for it, or could I just add some gasket sealant there as well? I think I already know the answer to that question, but just wanted to hear some thoughts.

thanks,
chris