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Hi all: I wonder whether anyone has any thoughts on the following 2 issues that I've been experiencing with my 1999 MSE (about 1950 TSMO): 1. My engine consistently misfires at idle. I've had this problem for a long time, but it seems be more frequent now (generally one 'stumble' every 10 or 15 seconds). I was told a long time ago that this is common in Mooneys due to the twists and turns in the intake manifolds, but I wouldn't imagine that would cause misfires with any regularity? I recently changed my plugs, but the problem is still with me. I'll also note that my oil consumption is really high (about 1Q every 3.25 or 3.5 hours), but the old plugs didn't seem fouled (one of them had cracked, causing a significant vibration that was fixed when we replaced it). 2. Lately, after setting my RPM to 2450 in cruise, I see that it'll bounce around between 2420 and 2470. It happens for about half a minute before returning to 2450 and then it'll happen again every 10 minutes or so. I guess - while I'm at it, I'll also mention that my panel back-lights went dark on me a few weeks ago. I ruled out a bad fused by swapping the 2 125v cylindrical fuses on the back-lighting and the glareshield lights - after which neither lighting system worked. When I swapped them back to their original positions, the glareshield lights were working again, but the panel back-lighting was still dark. I'm working with my mechanic to diagnose the engine issues, but would be grateful for any thoughts/advice from this group. Thanks!