There is one thing definite. After the truck is run everything will change. Fresh oil, fresh springs, no added weight from grit,grime or dirt.. It is a given that it will be different after I race it, but I also want a baseline to see how much changes.

As far as the MDF.. I would look into some glass.. Are you using a digital level to check if your board is true? A bubble is not going to provide any accuracy beyond what the eye can see. Try a 6 inch digital level that will measure to the hundreths at least, then you can see how level your board is. Glass is about the truest surface I have ever found.

All this being said, it is an off-road car, I'm kinda overboard with it, and truth is I doubt any of this makes a difference on a beat up BMX track driving a car that 6 lbs. It is the Placebo effect, if you think it's better.... it is!