Hello Hayling,
As Granpa has said, many factors come into play with a mini. A mini is designed with slop built in. If you start shimming stuff you will have an evil minded car that will be a pig to drive. I only shim the steering , rear axles to take a little of the side to side movement out and the oil gear diff in my mini.
It is a personal choice, but I have seen many mini's that have been over shimmed create huge issues for new racers.
I replace the complete plastic steering on cars with Tamiya hopups, purely as for me I hit things occassionally and have bent the wiper arms and steering bridge. I also replaced the plastic hubs and knuckles with alloy, as they are stronger. Again your choice.
I do use spacers on my steering linkages, so they are even and my rear upper links to the hub. I usually run -1.5 degree rear camber and up front just use the standard link supplied in the kit. Steering I use a 0.5 to 2mm spacer depending on the track and car stability. We have learnt that on the MO5 front toe out makes for a more stable car that tracks straight. You need to experiment with tnis. I currently run a 0.5mm spacer with our control tyre.
The MO6 pins wher the bottom of your shock attaches too, was not to my liking. I made my shocks 56.5mm in length and fitted them in the normal place above the front arm in the little bump. If using the MO6 pins I found the car needed to be run softer. That is oil and springs. 3 hole pistons, red springs front, yellow rear.
The 55mm Ride tyres 3035 front and 3027 rear will work, but depending on the inserts may push a little. Here in Australia we used to use 3035 front with a 4.1 green or orange fitted insert in summer and use the 3027 on the front in winter, same inserts. The ride tyres will be a it skatey until you wear the ridge out of the middle, then they will square off.
Ride height on a bumpy track is run the car and see. You will notice if the car is sliding, but ball park would be 5 mm front and 5.5 to 6mm rear. Although some will run lower. Depends on your driving style and whether you have traction roll issues. Slamming the car down does not necessarily rectify that problem.
Setting your transmitter correctly also helps in mini. I run negative 25 on my steering and do not use full steering throw. Mini is about being smooth and fast.
The basic MO5 is not balanced, so you might want to balance the car by running your ESC on the right rear and rx on the left. Add some tyre ballast to the front and inbetween the motor screws.
The best bet is to run the car and make adjustments to suit your track and driving style.
Any further questions ask away. I did post a MO5 setup on here, many pages ago. It may help.
Regards,
Calvin.