Call Torklift yourself, but this is what they just told me...You can drill new holes in the Torklift extensions 1 inch farther in so the extensions are 1 inch farther out. Hope that makes sense.
Also I called Bigfoot and they said it was fine to bolt 1/2" machinery eyebolts (with a shoulder) in the camper hold down holes. I did that and used nylon locking nuts. I got the eyebolts on Amazon._2 of 5pc Set (1/2"x1-1/2") Self-Colored Heavy Duty Machinery Lifting Eye Bolt for $17.25
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Someone on this forum suggested turning the Fastguns upside down.
All these worked well and I have good clearance.