Receiver Clearance Too Short For Riser

[Receiver Clearance Too Short For Riser]

Just bought a 2011 Holiday Rambler Augusta B+, and I want to tow my '03 Jeep Wrangler. 

The Jeep base plate hitches are 10" higher than the RV receiver, so  bought a Blue Ox 10"  riser.  The shank on the riser is 8 1/2 inches from centerline of the pin hole to the vertical riser. 

The distance from centerline pin hole on the RV receiver to the outside of the rear bumper is 9".  It misses by a half inch!  So, I can buy a 6" extension, which from what I've heard undermines the towing capacity, or I can have the RV tow hitch assembly removed, drill a couple of new holes closer to the bumper and reinstalled.

Any suggestions or recommendations would be appreciated.

Thanks!

Rick 

[Receiver Clearance Too Short For Riser]

Just bought a 2011 Holiday Rambler Augusta B+, and I want to tow my '03 Jeep Wrangler.  The Jeep base plate hitches are 10" higher than the RV receiver, so  bought a Blue Ox 10"  riser.  The shank on the riser is 8 1/2 inches from centerline of the pin hole to the vertical riser.  The distance from centerline pin hole on the RV receiver to the outside of the rear bumper is 9".  It misses by a half inch!  So, I can buy a 6" extension, which from what I've heard undermines the towing capacity, or I can have the RV tow hitch assembly removed, drill a couple of new holes closer to the bumper and reinstalled.

Any suggestions or recommendations would be appreciated.

Thanks!

Rick