The motor idled fine last summer.  After a long winter our first trip this spring to Bigfork Montana was when I noticed the rough idle. I've put 755 miles on it since the rough idle. Is that enough miles to burn the valve? I've watched a couple youtube videos on the valve adjustment and one guy used a Honda motorcycle tool to compress the bucket. I'm pretty handy with tools and vehicle maintenance but old and have no shop, but I have lots of shade on the property. The Yotashop over in western Washington has shims ranging from 2.20 to 3.40 for $18 apiece and the adjusting tools for $45. I was a carpenter for 35 yrs so math is no problem but the old back is not what it used to be. I will do the adjustment if you guy's think I haven't put too many miles on it. I can't thank all of you enough for all your input!

In the motorcycle world there is a tool to hold the shim bucket down when turning the crank so you are able to then use a magnet/tool to get the shim out without having to remove the cam. I have a Yamaha xj bike and have had to swap out shims using a bucket holding tool. My particular bike has a bucket holder you can secure to the head. However, I've seen other hand held bucket holding tools for other bikes. Worth researching as not having to complete a lot of disassembly is a major time saver. You can learn online about cam lobe position on the shims for getting the correct measurement on both sides. Shop time will be costly. 

not much chance of it being ok if it ran with it like that for any length of time, the valve is burnt