My 700r4 shifts fine 1st.,2nd ,3rd at 25 mph, and then no 4th shift to OD. Drove it on the Freeway and seems to be on 3rd gear.adjusted the TV Cable no Diffrence. when trying to pass engine is at high rpm and not able to pick up speed. if I put a B&M shift Kit would this help. or is there anything I can add to the fluid like B&M Trick shift would that help.