The shop looked at my saw yesterday, they didn't seem to care about the mods. They thought the tach was a good Idea. I hear ya on the oiler thou because if I get a replacement, I'm out $100. But this is a good shop so I'm not so worried about the mods. ...its a dwg and a tach, there's no holes... the tach is sealed in the cover. The tach is inductive so no mods to the saw at all that isn't factory other then the cover. Plus there's the winter and summer plug if there concern about a leak to the filter...the saw only has .3 total hours on it. Yesterday when I had the saw in at the shop because of the flooding and I thought something was wrong with it. At that time they saw the hour meter was at 0 hours...hadn't ran long enough to even give a reading. It would be pretty hard to say I did something to the saw. The shop ran my saw yesterday. I think its best to just take it in...as suggested. The way I look at it I did what was required to make sure the saw was square with the shop, they told me there was nothing wrong with the saw run it. I had flooded it! I wondering if the compression release is faulty...the saw idles fine thou. Not sure but since it new...going to let them figure it out. Taking the saw in on my lunch...I have my camera here so if need be I'll look in on the cylinder with them.