You need to get the proper throttle cable bracket.

Look here:

http://arengineering.com/throttlebracket/Tbracket/tbracketframe.html

Once you get that fixed we can help you get things sorted out.

Step 1: get the correct throttle cable bracket
Step 2: install said bracket
Step 3: get back to us so we can help you get it working properly.

We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind.
- Stu Harmon