I'm the same way, Northie. When I read stories by non-US authors, I expect to see different spellings, sayings, words, etc. I don't find it off-putting in the slightest. If I'm not sure what a saying or word means, I look it up. To change the dialect would make the story inauthentic. One thing I find jarring is when the dialect doesn't match the area. For example, British equestrian terminology in the Western US. Or American slang being used by a character who's supposed to be British. If you are not familiar with the setting of your story, it shows. I had someone contact me once about "The Hollow Hills" and Vermont. There were aspects I had gotten wrong because I am not from Vermont, nor do I have intimate knowledge of that area. That person now beta reads the chapters that feature aspects of Vermont I'm not familiar with. I'm still not 100% comfortable with some of the dialect, but I use it to maintain the story's authenticity.