Bontrager owners: tech question please...

bb size

UN72 axle length 4 Bonty running middleburn rs7s = 109 // 110mm , (68mm shell) also used same with Suntour XCPro's
 
Cheers Tangent. I bought a 68/113 from the VERY nice peeps at Chainreaction ( they're letting me do a swap for a small admin fee...bless ). Trouble is it seems MILES out! Initiallay, I tried a 73/108 ( it was free ) but that was so close I knew the chainset was gonna be a hacksaw at the first sign of flex.
I was wondering, as it's a Syncros chainset, could I use a 68/108?
 

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