I also added some lightening holes to my custom handle bracket.
Finally I worked on opening up the rear spar carry through to keep the elevator pushrod from rubbing.
Fitting the tunnel cover around the handle:
Cover plate almost finished:
Finished cover plate and bracket with lightening holes:
Interference with the carry through and pushrod is common. Vans allows shaving up to 1/8" off the carry through to provide clearance.