Thanks for your comment! I really appreciate it
I used this technique:
1. Find a part to use as a blueprint.
2. Place it on a carbon plate and drill two holes through two original holes.
3. Put a screw and a nut in those holes to keep it firm.
4. Use a dremel or similar and cut it roughly.
4. Now trim it closer and closer until you just touch the original part's outer bound.
5. Do the some thing with the inner areas that should be "holes".
5. Drill through all the original holes.
6. Take the blueprint away and file down any ugly areas.
I think that's about it
You are totally right about the screws underneath. I'm not done with the counter sunk yet. The hex screws are new from RC Screws and yes, they make it look good!
This will certainly affect the chassis flex but I'm not going to race it hard or compete with it. Just cruising around our track on sundays smiling because of the nostalgic memories