I just picked up a used RM250 and I replaced the chain and sprockets. When I bought the chain my budget only let me get a DID 520 chain (the cheap one) now after every ride and sometimes between rides I have had to adjust it. What do you guys recommend because I know some chains rub the cases etc? Whatever chain is on my 08 RMZ 450 is great I have had to adjust it 3 times in 4 months. and I ride every weekend. Anyway, give me your thoughts on a good chain.