I am have an issue with my shifting. sometimes when i take off and go to shift into 2nd it hangs up and wont let me shift. i have to shut down and pop the hood and move the linkage back and forth between 1 and reverse and leave it in neutral and shift the 2nd and 3rd gears also then get back in and go. it is like it hangs up in 1st gear. Do I need a rebuilt shifter box?? talked with one guy and he thought i did.