Great day today! Past the SDM test! It was quite an interesting test, didn't find it very difficult. Basically, if you read very carefully through the instructions and practice a little, there should be no problem on passing the test. I for one, didn't focus on finding the opposite conflicts. I focused on the sorting, revisions and discarding the flight strips. Also, i spotted 8 local conflicts. Seems that was enough since i passed it
Regarding the SkyTest software. The SDM test provided by them is actually more difficult then the actual test, but a very good asset to practice with and get used to the requirements.
Best of luck to you all!