thats right the 2 stroke engine is very fragile, it suffers, from every form of abuse known, cold seizures heat seizures, oil seizures, to be honest, i try 2 steer clear of the strokers, stick to 4 strokes, more reliable, and can take more abuse (i know i come from a family of mechanical engineers) plus the fact, how many rs 125s have u seen with over 90,000 miles on the clock and still running on the 1st mill?