Help me figure out this mystery

[thedaydreamer]

Hi

I have a Znen 150T scooter, lately it has not been running right at all, it starts and idles, but the idle is a bit "rough" when you sit on it, it almost feels like the bike is slighly bucking forward, its slight but noticable,,,you can ride this thing for about 10min,Go WOT, then you notice a slight loss in power and on throttle it starts to hitch or skip, then full throttle bog and stall,,,wait 10secs, its starts back up and is boggy and hitchy and will stall out,,,,when I put the bike in the garage it smells, hot or burned oil kind of scent and if you look under the bike later you will see oil drops, here are the things I have done so far with no success



-3 different new carburators

-new plug, battery, fuel petcock, CDI and IG coil

-oil change

-valve clearence .003 and .004 respectively

-sprayed carb clean on hoses on idle to detect vaccum leaks

-replaced some of the fuel and vaccum hoses

It SEEMS that when the bike get hot on WOT is when all the issues start

The symptoms listed are consistent no matter what I did, Im not sure what to try from here, if you have any ideas im open ears

TY for you help