Thank your for the info. I would like to mention that the marks on the cylinder are much rougher than on the piston, If u take the piston and run your fingers along the marks, it resembles touching a nail grinder. Anyway If I will buy a new piston, I will have the cylinder repaired too. Hopefully I will not have problems for a while then. I would rather have it sitting in the garage for a while, then repairing it correctly once I have money, at least I can go riding and not worry then.
Cheers,Tom