Just bought a 2002 model ( the guy claims) Exmark Metro 21 inch. $275Everything seemed ok on it and it seemed to cut fine when I tested it for a minute on the guys yard. I bought it yesterday. The problem is that when I tested it again on my yard, it looked like it missed about 5% of the grass. It just didn't cut em at all, just layed em down or something. I check the blade and it was pretty dull so I drove way out to get a new blade and that one sharpened. I put the new blade on. Oh, it also has a little mulch blade that is dull ( but should it be ) and is like 8 inches long. It fits over the 21in blade. It seemed to help with the new blade, but still misses some. It did rain a lot today so I'm hoping that this is the reason for more misses. It's a quiet motor but moves at least 4.5-5 mph in 3rd. 2nd is like 2 mph or slow and haven't put in 1. He claims that they always maintained it but the oil was dark brown and air filter pretty dirty. He assured me that it would cut better than my 21 in John Deere ( which is in the shop now and always cut great). However so far it doesn't. I called one place and they said it could be a problem with the rpm's and that there is a spring or something that may need to be adjusted so that it runs higher and thus will cut better. Like I said, it seems alwful quiet ( although perhaps with a Kawi engine maybe it should) but yet moves fast. Just cuts a bit badly. What should I do? Try to get my $ back. Threaten to take him to small claims court? See if he'll help pay for any repairs it needs? Do something to fix it myself? Or take it in and just pay what I have to in order to get it working properly?