hello everyone, i just found your website, i have a zetor 4340 with a forward-reverse lever , or shuttle as some call it. it is stuck in forward. i can get it to go to the neutral position, and if i tap on it slightly with a hammer it will go into reverse and drive fine, but then it is hard to go back in to forward . it shifts fine from neutral to forward. any advise anyone has i would really appreciate, thanks !!!!!!