Here's a very nice Saito 91 for your next bird. This engine needs nothing and I did a complete test run today and set the valve adjustment as well. Engine is spotless (as you can see) and has the late model muffer and header that came with it. The muffler is polished to keep fuel residue from sticking and discoloring it--I do this to all my mufflers. I normall run 14x7 props on my 91's and this engine spins it very well and idle is slow and smooth, transition to full throttle is perfect. Compression and bearings are perfect. What you see is what you get and what you see is very nice. Price is fair at $145 and shipping to the lower 48 states is only $10. This engine sells new for $339!