I just picked up 2 of the HPI backplates for mine and a buddie's Tornado. We always have our cordless drills so decided to forego the roto starter. Couldn't justify the added expense for 2 newbies with broken pull starts. With that being said does anyone know if 7/32 is the correct size hex for the HPI backplate? I was going to pick up one next week so my car would be ready to run when our parts arrived.

Also, we use 19.6 volt craftsman drills. Any tips on settings for the drill that wouldbe similar to a rotostart? We have a high and a low gear with 18 individual speed settings.