I have 2 new cassettes a Sram SR-PG830 (11x32) and a Nasbar NS-CST8 (11x28). The Sram is 11, 12, 14, 16, 18, 21, 26, 32, and the Nasbar is 11, 13, 15, 17, 19, 21, 24, 28. I want to drop the 12 & 26 out of the Sram and add the 24 & 28 from the Nashbar in between the Sram 21 & 32. Since the Nashbar 28 is the last gear is there a problem making it the next to the last gear in the new custom set? Any other problems in doing this? My rear derailleur will handle the 11-32 combo.