hello my DT125R has a few problems

1. won't idle with choke off, and sometime seems to stutter a small amount while accelerating from standstill but is fine once its at higher revs..

2. it has a slight rattling noise coming from the engine, but it is neither small end bearing or big end bearing from what i could tell, when i checked them. and it has had this rattling noise for about 5 months now and if it was a bearing surely it would of been nackered by now.

any help is appreciated thank you.

1; possible blocked pilot jet

2 How many miles has it done then?

had a hunch it would be pilot jet, came here to get help from people i trust haha and its done around 35k, cheers.

Crank case bearing & seal buggered ?