i did this the other day and it came out really well. basically all you are doing is turning the G into an 8 and cutting off the 211.com part of the diecut. it does take two original go211 die cuts though.
1. take the backing off one die cut (not the clear stuff)
2. use an x-acto knife to cut two straight pieces of the G, O or 2 that will be used to fill the gaps in the G from the other sticker to make it into an 8
3. cut the sticker so all you have left is GO2
4. take the backing (again not the clear stuff) off the second sticker and carefully lay the pieces you cut sticky side up on top of the gaps in the G. at this point it should look like the 8.
note: the 1's are thicker than the G so you cant use them instead of the pieces from another sticker if you want the final to look clean
i hope these directions are clear enough post or pm with any questions... ill try to get a pic up tomorrow eavening.