Am I forgetting something, or are you guys just making this job much harder than necessary. I recall using the LeMans base itself as its own "template". Put it where it needed to go, drill a hole, add a nut and screw, do the second one, nut and screw, zip the remaining holes and done. What am I missing here that you guys need CAD programs?
You DO know that that cap screws apart, don't you?????