The 990 was one of the first bikes we built the Gobblers for and it is an amazing improvment. I was yelling out loud when we tested the final set up because they made the forks Sooo much better. The holy Grail is to keep the forks at least as plush as stock but at the same time adding a large amount of bottoming resistance in a very silky and controlled manner. These fill the bill.
You want more? We can also build your current mid valves into the Cone Valve technology with our sprung mid valve design by machining your current mid valves. The combination of the Gobblers and Sprung mid valves known as the Gobbler Pro is actually a game changer.
No exaggeration it is that good! 
We have received a run of 950/990s for several months as the word is spreading. Therefore we will be manufacturing Sprung mid valves for the 950/990 bikes.
Should have them on the shelf before end of the year.