First off, when I bought the jet-kit for my VT750DC. I wasn't sure if this would fix my idling problem. When I worked on the carbs, found out that the idle jet was clogged up, I cleaned it out. Once that was done, I installed the springs, needles and main jets that the kit came with and adjusted the air to fuel mixture like the instructions said. Now the bike turns on like the day it was brand new. It took me about six hours to do everything. I don't even have to put the choke on to start the bike. Maybe, when it is very cold I will have to put it in choke. Took a five minute ride and I can tell that my 750 has a little more power.