Hot Head !
How did you run the engine in ?....I ended up idling 2 tanks, idling with slightly different speeds another 2 tanks, then I have probably only done another 3 tanks smoothly around the track.
The front diff (if you could call it that) seems to work OK. Looking at a fixed plastic shaft for a diff does sound crappy however the car handles better than my fully hopped SII which I spent mega $ on. I am no expert however the turn-in and acceleration out of the corners seem great. I will probably try a front one-way (as I have one) and see if it improves the performance (and make sure I can brake without doing a 180).
..the only thing I have done is installed my Rossi pipe and put 4 spider gears in the rear diff. I filled the rear diff with 7000wt oil and I have noticed it has been leaking. I am sure I seated the o-ring correctly before assembling.
Got my SIII from hongkong US285+40freight
I'll post some pics tomorrow