Probably your clutch. Check your slave cylinder and clutch master cylinder.
Sounds like your clutch is not disengaging completely.
Harald
'90 westy

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> From: Route87 <Route87@AOL.COM>>
> one of you probably have had this little problem,
> I'll shift up from 1 to 2 and when I pull it out of 1 , it goes CLUNK or
> THUMP...
> and once in awhile from 2 to 1 it'll grind; and sometimes into reverse.
>
> what dya think guys?