Hey guys, I have a Honda mower model #HRR2163TDA. Been a great mower for 10 years but recently started having some idle problems. It all started when I would cut the idle way down and the mower would die. My local repair shop recommended this mechanic in a bottle stuff. I put it in the mower and let it sit for 10 hrs. I drained it out and added new gas. same problem. Called my local repair shop and purchased a whole new carb setup. Installed new carb, same problem. Any suggestions would be great. Thanks