well idk if this is just when its a cold start or something, but shifting from 1st to 2nd smoothly at a slow acceleration I hear this clunk or something when engaging the clutch and putting it in second, and it feels like more weight is being shifted in the car...Kinda hard to explain, but later it doesnt do it.

bump for some bros.

 

any more information?

 

Its likely your exhaust moving around..

 

+1 this happens to me too