I haven't even started to try and figure this out yet, as I just made it home.... We were on an exploratory trip around all three forks on the Snoqualmie river today and as I was headed to the last leg (South Fork) the 990 started to act like it was running out of gas. Anything past 5,000 rpms it would start to fall on it's face. Pull the clutch in and it revs freely. I only had 90 miles on the tank and no low fuel light yet. It was pretty dusty on the 2 forks we did make, but I can't imagine that the filter was that plugged? If the fuel pump starts to go, would this be a common scenario...where it appears to be fuel starved, but only under load? Where should I start?