Hello and Happy Holidays to everyone. I'm having trouble keeping my WSM temp up to 250. Its a littlw Windy and 55 Degrees outside. I fired up the WSM using the Minion Method, but I've had the bottom vents on 100% open since the start and just can keep the temp at 230-250 degrees. It's been 2 1/2 hours since the start. I'm doing one butterflyed chicken on the top grate and beer butt on the bottom. Is this a usual occurence when the temp is kinda low? Thanks for your help.