It has been sitting for around a year, when I got it the idle was rough it would sit around 1000 rpm then sound like it was going to stall. After I tried to run a compression test (with a cylinder compression tester) it now idles better with a little vibration. The test read 60 psi in the rear rotor and 70 in the front all 3 sides of both rotors pulsed at the same psi, but I have no idea what rpm it was turning at. From what the guy told me it was running when it was put away before last winter.