Hi sry for being a little slow,first a little thing the parts i have used is metric i dont know if you can get them in the states ?
First you ned to buy some 6x40 mm screws with a hexagon head,you have to grind down each flat side of the heaxagon head by almost 1 mm and if you really want to do a good job you also cut down the screw to a length off 37 mm so they look like this.
I dont know what the english/american word is for these but directly translated they are called cros screws,they are used to assemble furniture with,the outside diameter is 8 mm and they are 12 mm long with a 6 mm thread through them,i got mine from a hardware store in a small package.
here one of them is beside one of the normal plastic ones
You also have to drill out the finger nut with a 6 mm drill to accept the bigger screw,and then put the screw head into the finger nut so it is little opposit from how its normally mounted,and then i ends up looking little like this.
Hope that makes a little sense ?
Just ask if you have any problems,and if you cant get the mm parts over there and there is no inch parts that fit send me an pm an we will figure out how i can send some to you.