SP 500 Touring 2010 by maq

This is my first and the only one quad. I bought new one in 2010 and we travel together over 8600 km and 263 mth. I love him 😉
I will write about my ideas of modification, which are already described on Polish forum ATV Polska, in my theme (715 posts, 27000 views), a little later. I need solution of one problem now.
After the engine start, looking on oil filter and clutch cover, I see the engine specific vibration. I didn’t see it before.
I finished service of gearbox and it was took off from the quad. After montage it looked normal, but this vibration is something new I think.
Can you check your SP 500 and look at it? Maybe somebody knows anything about that?