looking for insight on problems with billet cases and stock tranny not shifting. tranny has brand new shift forks nuetral down 1-4 overide. right off the trailor it would only shift in 1rst and 2nd under a load only. under no load it will go threw all gears. never had this problem before and i think since the new motor i buil i have had this problem and cant figure out what the problem is. anyone else have issues with billet cases and a stock tranny not wanting to shift past 2nd gear.