[warriorman]

but what I do is this. I put the base on a figure then I put it on the board and run it. If it goes straight I leave it alone. If it doesn't , I swipe it over some heat and test it again. If it still doesn't run fairly straight , I will squeeze the prongs and repeat these methods. Remember , every base is different. There are better tweakers you need to ask than me but this is how I do it.