So got the 811 out this weekend. Track was loamy and damp in the morning, turning to dusty hard pack later in the day. Traction was low to medium.

Went in with a handful of new things to try. I did dump the Fioroni pistons and went to Max's setup with 1.4 and 1.3/1.4 stock pistons, same oil, same springs. Biggest difference is running 7/10/5 in the diffs. Car was drivable, but back end was not planted, especially on hard acceleration out of the corners, much more so where it was off-camber or rutted. Started making changes. Went from 30wt to 25wt in the rear shocks, several spring changes front and rear, raised the rear roll center, upper shock mounts, etc. By the end, the back end was a little better, but still nowhere near what the 2 MP9's I drove were. It jumped extremely well, and was able to rotate the car under breaking to dive in under other cars in the corners. The 2 issues were accelerating onto the 2 straights and the back end washing out (one off camber, the other rutted), and one bump section that was a small triple leading into some random bumps. If I landed between the triple and the bumps, and ran light throttle, I was ok. If the car landed in the bumps, or I tried to accelerate or brake in them, the car went wonky.

I did not have any spare diffs with me, but I am assuming that the bumps section is due more to the 10k center diff, though the 7k front maybe as well. Some suggested lowering the rear also to 3k from 5k also. All V1 diffs.

Car overall was fun though, qualified 6th in the B, finished 9th due to a bad tire change choice (switched between rounds, and was good before they blew off the track, then side bite was too high and traction rolled) and some unlucky marshalling. I am enjoying making the changes and feeling what they do. I am enjoying less the gallon of shock oil necessary for an oil change, but such is 8th scale.

I did also get to try the light blue kyosho springs that are so touted. At least with the oil/piston package I had, they were not good for me, both in the bumps and over the smaller jumps. Back to the V1 Serpent springs I have and was much more consistent.