seems to me, you have to make cl_maxfps to 120 anytime. and if you want the doublejump alias to work, you have to use lots of "wait"'s in it. somewhere between 15 and 27 on today's computers... IMHO
i really don't know how lotsa guys have 100% double jump from ammopack box to yellow armor on dm1... i manage to do it 50/50