Was just finishing up and the Bob-Cat started sputtering. I knew it had fresh oil and was full of gas. It had a random miss for a while and I just thought the plug needed changing. I put a new plug in and it fired up after bitching about it first. It occured to me then that the power seemed off the last few days. I tried full throttle and it tried and died. Why do the worst thoughts enter our heads at a time like that? I pushed the throttle to full choke and then I saw it. The air cleaner moved when I moved the throttle. Yeah, the manifold bolts had backed out. Must be the price for all the ruff yards I cut. Runs like a scalded dog now. Ever thought you had a bad problem and it turn out to be a simple thing?