Also I was thinking, whereabouts on the track was this rolling in the air happening?
After a year of racing at SCRC i've only just learnt (yes I know) to stay low over the big tabletop near the rostrum and try and land on the landing ramp as much as you can (don't try and jump it like a truggy). It's deceptive because slowing down before you hit it makes you feel like you're not trying hard enough but in reality it means you can get the power on sooner and be faster after the jump (because you land sooner) and the car rolls less because it spends less time in the air. I know with the Vorza if I try and carry every bit of corner speed I have over that jump it just goes sideways on takeoff and, er, hits the rostrum
Also on the small double before the main straight, i've found the best way to approach this is to take it easy through the right/left kink leading up to it, try and get as close as possible to the apex on the left, square the turn off and then punch the gas, this makes you hit the jump straighter. I was marshalling there Sunday and buggy drivers that were trying to corner and clear the double at the same time were always barrel rolling and ending up in the tyres, it was happening to nitros as well just because they still had cornering forces stored in the car when it took off.
With the quad jump I don't really know what to suggest other than to hit it as straight as possible, I used to be a bit faster through the approach hairpin before they were there but I find to get a really good shot at doing 3-and-1 you have to go a bit deeper into that corner and spend a bit more time straightening up. Hope this helps, it should because your battery/motor/ESC layout is basically the same as mine.