i tried the modified .cfg, and all i can say is, what a difference!!! :o
the EH101 is actually stable now... it's perfectly possible to do the missions with this tuned .cfg ...i can't say anything about how realistic it is, but it feels more natural for a big chopper to respond slower
basically, the chopper is much less responsive (which is a good thing in this case) ...reacting slower to every action, so you have a lot more time to correct and adjust your attitude before it starts swaying all over like it used to... it feels heavy now
i did the sugarloaf repair mission without breaking a sweat, and if it weren't for random crashes (software crashes, not me crashing

) and some weird mission bugs, i would have nailed the kayak rescue, the top secret package delivery, and the slingload tutorial... (apparently after you get your rescue victim inside, and disengage the hook, you have to lower the cable again WITHOUT engaging the hook, lest the victim decide to take another ride on the cable :P ...this failed me a mission or two already)
anyways, the chopper is much better now... (IMO at least, i have no idea if it's realistic) ... the only weird thing is that now instead of having to push it forward, like a regular chopper, the new dynamics have a tendency to accelerate forward, and you need to stay sharp and pull it back before you lose control of your speed (and lose your load like me

(again))
Cheers