I put a shift improver/kit in and now it doesnt have drive. Low and second are fine. Linkage seems to be adjusted right. Just doesnt shift into drive.

Dont matter if you put it in drive and let it shift on its own or if you pull it down and shift manually. Its doesnt shift out of second gear. Thanks for any help.

 

TCI shift improver kit. It had 2 springs that your switched in the valve body and 2 teplets where you drilled out veins in it. Also a reducer plug that you put in the case. Thanks!