Sure you can but I would try 5% first. My own feelings about MDS, they were Russia's way of getting back at us!!! I have had three of the .58s and two of the .68s. I was OK with the .68s, not great but OK once I figured out there compression/porting and the nitro thing. The problem I had with the .58s was not just running but the castings. Two of them broke right at the case where the muffler bolts onto. Once Horizon even sent me the new improved carb, it was still crap!! Horizon quit selling them in about a year?? After every broken .58 Horizon just sent me a new engine. I have a new .58 under the bench in the box. I ran it a couple of times and said the hell with them. The term Many Dead Sticks is just what the guys called them. When you get one to run they are great. I just no longer run two strokes often and when I do it's the SK .91s from Kangke.
Dick, I haven't a clue about the Evos. I have fooled with the smaller ones and they were OK after I removed the limiters and was able to tune them. I can't recall ever working on the 100 at all. I just don't see many of them to judge. I had a Moiki buddy so when I was in doubt I just borrowed fuel from him to run tests with FAI or 5%. Give it a shot if you too have a friend like mine. Better to borrow then get stuck with a gallon of fuel you will never use on anything else.