My qt50 has not been running for a couple of months. I recently found some time to try and fix it and upon inspection found that my pilot air intake adjustment screw was completly missing. I'm wondering what kind of direct effect this would have on the operation of the moped. I'm assuming it would not start at all which is my current problem. However, the moped was starting rough for the 3 months I rode it in the spring and I had never properly prepped it for winter storage and had assumed the problem was a gunked up carb. Eventually it just completly wouldnt start at all. Today I took the carb apart and it is very clean so I don't think that was the problem. Anyways I'm wondering if anyone has ever run into something like this before. Thanks in advance for any help.