Hello! I have a Coleman 550x that has about 4.5 hours on it. It's had an easy life waiting on the engine to break in. I purchased it in June and now with cooler weather coming in, it seems to be not wanting to start. If the temp outside is 70 degrees or less, it won't catch. The lights all work, no error code. I can turn over the engine and the battery is strong. If I give it the slightest amount of gas, it will start. However, if the RPM drop near 1500, it quits. I've tried running it for 6-7 mins (with the accelerator slightly depressed) to see if when warmed it up it works, but still no go. Perhaps the engine didn't actually warm up at that low of RPM and around 65 degrees outside. If the temperature is warmer, starts right up and runs no big deal as if nothing is wrong. I called coleman and they want me to take it to a repair shop and they didn't even try to troubleshoot. Any ideas?