Difficult to shift to 3rd

[stoopidfast]

Out for a ride this weekend and everything was going well until I had to put all my weight to shift to 3rd and even then it would work very intermittently.  I got best results when I reached down with my hand and pulled up to third.  Have not taken apart yet, is there anything that I should look for or has anyone had this issue before?  Modded shift star worn, bent fork...not sure what it could be or what to look for.

Shifting was a breeze for 1-2 and 4-6.

Thanks.

[trickedcarbine]

Is the bike beyond bolt ons? You could be to the point where power is exceeding what the stock trans was intended for.

 

Otherwise... Check Shift Shaft spring and Eccentric adjustment, also inspect the Detent Arm action over the Shift Star. If that checks out you will need to split the cases to see the forks.