I spent the money for the Hypertech ThemoMaster chip and noticed the in town shifts are off. I have an 85 w/700r4. What happens is at low speed (about 25 mph) the transmition is in a high gear and you feel that you need to speed up or slow down. I believe the chip has settings that set the shift points. Is this something I have to live with, a bad chip or can it be fixed? I see a product in Mid America which is a switch that appearantly fixes the problem, how?