The car was very good and consistent, sharp, lots of turning yet very stable, even on the greasy track it felt good and was faster than a lot of cars in the heat, it was just me making small mistakes which cost me dear.
1.3mm hole is close to a losi orange (55) and the smaller one you refer to is a #56 (red) im not sure on tamiya oil i have never used it, but i ran losi 35wt front and 30wt rear with 56 front and a 556 rear piston. I ran aero blue spring front and red rear.
The sanding down of the spacer or washer does really help, the o rings also expand with the oil and this wont help.
Front:
I ran a short camber link on the hub (4mm spacer) and in the upper/inner hole on the tower and inner shock position on the tower and outer on the wishbone.
Rear:
Middle hole on hub and inner on tower 1/3 from bottom. shock was middle on tower and w/b.
2 mm in front of wishbone and 3mm behind for wheelbase, the hub was also long but this is something i am going to play with this weekend.
The car felt very good even in the damp conditions. Im still to get a new set of yellows on it and see what it can do
One tip. Leave the tamiya at home, thats the reason why i sold my bj4, i knew i could get it out and be fairly quick with it, but it meant i would never of given the aero the time. I`m glad i did now its very nice once sorted.