Give it throttle and it tops out around 3k. Don't think its a fuel issue, just did a carb job and checked all fittings, and fuel looks fine. It was misfiring @ idle intermittently this AM, so I checked all connections, plugs, wires, etc. (BTW pretty sure I got zapped a bit when I pulled the cowling). Idle smoothed out but still no top end. Any ideas? Thanks!