| hmm cant see why you would bother telling someone they are 748R cans.
I wouldn't give a toss if they were off Christ almighty bike. just need to know if they are 50 or 45mm.
anyway. I think its down to the fact they are more restrictive, have you changed the chip to suite them ?
although if you mean by re route the throttle cable you undid it at the throttle housing then I suppose it is possible you have wound it in to far.
wind it out some before trying again. and you should be able to continue adjusting with the side panel off if need be. good luck | 
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