Ride height on dex210 rtr

[arceye]

First off, I'm not very good with set ups or tweaking stuff. Only been racing 7 months with no previous experience. I bought the rtr as it seemed to be a decent starting point, then spent hundreds getting it up to spec, just fitted the +8mm ally chassis this week.
My question is about setting the ride height, I watched the official Durango video on it (adjust the springs) but doing this on mine still left me up in the clouds (about 28mm) Looking at some set up sheets for a base set up on astro ( for Batley regional at weekend) they seem to all run at 19/ 20 mm. Now I've managed to get my ride height down to this by using the droop screws to push the wishbones up. Can I do it this way or will it just drive like a dog? If not, how do I drop the ride height? Prob an easy answer but Im a bit clueless. So any advice guys?