Excellent write up. If you're going to be playing with the timing, you need to learn to read the ground strap of the plug real quick. BTW, I like your choice of plug. Can you post a pic of one of the plugs, focusing on the ground strap? Starting with 20 degrees of timing was very smart. 20 degrees is very low for alcohol. You're going to see some impressive gains as the timing is moved up. To give you an idea, I run 30 degrees at 30 psi boost with 100% methanol. I like to keep the timing on the conservative side. As you step up on the timing, you'll notice a point where the performance increase begins to nose over. Don't push the timing to get that little extra performance. It's not worth it. Pick a conservative timing setting and leave it. All the while reading your plugs very carefully. You want to look for heat discoloration of the ground strap. This is an indicator of a good timing setting. The discoloration should extend half way back the ground strap. The further the heat discoloration extends back towards the thread end, the more heat that's being developed. On an NGK, you only want to see that heat discoloration extend halfway back. No further. The 11.1 a/f ratio reading is about perfect. Don't start leaning it until you've found a good timing setting first. I wouldn't lean it any further than 11.3:1 for a final tune with a conservative timing setting. A conservative timing setting for me would be 2 degrees retarded from the point where further timing increases is netting little performance increase. Again, very good write up. I enjoyed reading it. Thanks.