Several years ago, I bought a Stihl 036 at a garage sale. My research found that some 036s had adjustable oilers and some did not. Mine did. Years later, when I blew the top end, I replaced the p&c with Meteor parts, the cylinder having the extra hole for a decompression valve which I plugged. After the rebuild, the compression was so high, I could barely start the saw with my less-than-perfect shoulders. LSS, I added the decompression valve and found an appropriate used shroud. So...do I now have an 036 or an 036 Pro? O