I was changing the oil in a DS650 and the oil plug twisted off. after drilling it out I noticed I put a hole through the screen under the plug will thins hurt anything

 

Maybe you could fill the hole with a sealant.

 

I did a similar thing, I stripped my oil drain bolt and when I cut into it I cut too far. I ended up taking it to the *shop* to get it removed before causing any more damage. I really didn't want to, but there were 4 bolts that I had stripped and could not get off despite all my efforts so I broke down and paid to have them removed.

Hopefully that's the last time someone other than myself works on my quad!
Rear axle bearings are next on my list