You will be fine. I have been driving the same trans for almost 5 seasons. The thing you have to remember is when your driving it, is get it into drive as soon as you can. While driving it do not let off the gas in 1st and 2nd,get it into drive before you let off the gas. The reason was stated before that there is no engine braking in 1st and 2nd. Only in drive. Thats the reasons for no downshifting. The engine freewheels in 1st and 2nd. If you let off the gas in 1st and 2nd or downshift, Its like putting the car in neutral and when you give it gas its like doing neutral drops..The trans will not last very long.With a little practice you will have no problems.