If you just wanted to drive around and chase the cat why upgrade the taigen tank. Great for what it is. Same with a henglong.

the problem you have is the board if its clark, they are great but very complicated, designed much more for a pro tanker that has to have every option.
if you want tro try again go back to the stock gear, or slap an IBU2 into it, plug and play and not compicated.
good luck, hate to loose folks when they get discouraged with a model. You should see the hell I got myself into with a custom project, just working through it slowly.