Well, having previously only done the 125s, I decided last night to finally have a shot at the 125 shifter. Went to have a practice around the Brands Hatch layout to a feel for it and maybe an idea of how to set the transmission... nope. Couldn't run the shifter around there, or the Willow track. Ended up running around Monaco for a bunch of laps, which I found to be quite a bit of fun. Bit of a shame they didn't use it as one of the tracks in the championship, although in an arcade race around there I did find it rather easy. I reckon it'd make for some pretty good online racing though.
That said, DS3 users aside coz I dunno how the hell you guys can drive with that, I couldn't really see what the big deal is. I just set the top speed for I think 200km/h at the first two, and then 130km/h for GT Arena (just guesses, but they seemed to work out ok). At Willow I was in 3rd coming out of turn two on the first lap. They all pretty much parked it on the outside going into the corner, so I just bashed it down the inside and slotted in cleanly in 3rd.
No ballast involved, just a bit of free practice around Monaco and some transmission guesses. The main thing was just getting used to the throttle use for corners. Did have a few near misses around the GT Arena, but nothing a bit of quick countersteering couldn't fix.