Rough Engine

[midden]

I often get that grinding feel/sound and posted concern when I first got the bike and came on forum. With me it happens when the throttle is barely open and moving so slow, almost struggling to keep bike upright in traffic congestion.  I'll be in 2nd maybe flickin in and out of third, should still be in 1st for the speed but the ride is too jerky for comfort.  The grinding sound gets worse momentarily when I finally get chance to accelerate until engine reaches right speed for the gear.


Sound familiar?????


or is this gonna be another WD40