Hello Now we have winter in Poland. I've got my 01' yzf 426 from 8 months. It was in V.good condition when I bought it. There was almost no noise from engine ,only exhaust. Now it is a little more noisy. I've made around 35 hour on it. It had engine rebuild some time ago but I don't know when. It has job number written with electric pen on cylinder head. My valve shims are 178-180. I don't know what to do with the bike in winter. I whant to remowe cylinder head and cylinder and check them. But I don't know what to do with the bottom end. Change my rod or only check it ? Split the cases and change bearings or leave it ? What points in bottom end do I have to check to have certainty that the bike will go strong for next few months?