I ran my 950 on the Big Bang valve timing for about 30 miles. It made a lot more intake noise, because it’s sucking in twice as much air at once. I didn’t like that at all. The exhaust sound was more like a KLR 650 than a twin—did not like that. It was kind of fun, like a BIG single in the dirt but slow, kind of like a KLR 650, on the road. I didn’t want to idle. I changed it back right-a-way.
Get or make a plug wrench and use a piece wire down the plug hole and re-set your valve timing. Take your time and go to the “HOW” and read about how to adjust the valve timing on the 950 as the timing marks on the cam shafts are different from the 990. It will run soooo much better as a twin.