Late model 10 bolt rear... not quite 3" axle tubes

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I was planning to mount a nicely built 10 bolt from my 86 IROC into my truck. Ive got the axle saddles and super track bar kit from ECC to help mount it. Turns out the axle tubes arent quite 3" though. More like 2 3/4+". So the rear seems to mount fine but the saddles dont completely caress the axle tubes like it does on the old rear end. Anyone forsee problems with mounting this rear? Seems like it will bolt up fine and will jsut need a little extra time with the welding.