Under normal driving circumstanes my tranny shudders into 2nd and 3rd, its pretty noticeable and im not sure what it is. Sometimes under higher RPMS, upon the shift into 3rd, it slips and i just free rev for a second and then have to let it fall back to around 2 or 3k on the tach. It barely ever does that though. What am i dealing with here? I know pretty much nothing about transmissions.
Thanks!

 

bump......