modifying new tnt track bar

i just got my new track bar from tnt. i ordered the 4-6" from jeepinoutfitters.com. when i opened it the frame end of the bar had "6+" written in sharpie on the end. i started installing it anyway, but it is too long. i am running 4.5" PORC coils up front and i measure 13" from top of axle tube to bottom of frame rail. i installed the bar without the jam nut to see how close i could get it and it is close, but my alignment is about 1/4" off and there isn't room for the jam nut. i would see about exchanging the bar with TNT, but i really need it for this weekend and it is my DD so i'd like to modify it if i can safely do so. i was thinking of grinding down the jam nut about 1/8-1/4", and shaving about 1/4-3/8" off of the frame end "sleeve", the end that the jam nut tightens to. my other "quick" option is to add 2" poly spacers (which i have) to the front end. the front does sit a little lower than the back, and i could remove the coil isolaters so i only gain about 1.5" max from the spacers. what would you do?

send it back.

but you're forgetting the main objective. i NEED it for this weekend.

Put the spacers in, your going to want to make it taller some day anyway

Spacers or Modify it correctly by Cutting it down and rewelding, but theres no returning it anymore after that.