I'm having some trouble with my 1450 CC. I was having trouble with it bogging down under load a couple weeks ago. I changed the points and condensor and it seemed to run pretty well for a couple weeks after that. The last time I mowed with it, I had been mowing for about 30 minutes, shut it down for a break, and when I fired it back up, it didn't want to throttle up. It almost acted like it was vapor locked. I feathered the throttle a few times and got it to throttle back up. It ran fine for about ten minutes, then I idled down. When I went to throttle back up, it did the same thing, but I couldn't get it to come back up at all this time. I haven't had it running since. It had a new carburetor last summer, but I took it apart and cleaned it just to be safe. That did no good. I pulled the spark plug and hooked it back up and cranked it over. It has a strong spark. I went ahead and checked the point gap again, and it was still good. I got it to run for about 5 seconds twice, but then it died. I usually can't even get it to fire at all. I pulled the head to check the head gasket and thought I found the problem. The head gasket wasn't blown, but one of the bolts was loose that holds the head on, so I figured I was leaking compression there. I replaced the head gasket and retorqued all the bolts. Still nothing! About the only time I could get any kind of reaction out of it was an occassional backfire once I quit cranking it over. The valves looked good and didn't seem to be sticking when I had the head off. I'm at my wit's end. If anyone has any ideas, I'm definitely open to suggestions. This is my first CC. Thanks, Shawn.