Hi guys, I'm Emmanuel from Ghana and i am having a hard time fixing a 4l60e 2nd to 3rd slip. The clutches are all ok none burnt or showing signs of slipping. 1st to 2nd is firm, 3rd to 4th is firm as well, just that you can hear the engine rev. before the 3rd engages. Please any info. will be highly appreciated. Thanks for making me a part of this community.