I have seen a lot of threads on here about kits seizing up.
here is my advice when breaking in any 2 stroke use regular 2 stroke oil in the fuel mix. dont use synthetic right off the bat until after the break in period. Use a fuel/oil ratio of
28-30:1 for the break in period(minimum 200 miles).
and use non detergent straight weight 20 or 30 oil in the crank. Any mixed weight oil(5W-20) is a high detergent oil and will cause heat that can lead to seizing your engine period.