Alignment question

Good afternoon. I recently replaced the Audioquest PT-6 (a rebadged Jelco 250) in my SOTA Star Sapphire with a Jelco 750. The PT-6 mounting is 110 MM from the spindle. The 750 is 114 MM. However, the mounting slots in the headshell are about 6 MM and I was able to move the cartridge back in the headshell and still get a perfect alignment on a Geodisc. I can get a new arm board from SOTA with the correct 114 MM mounting hole, but if I'm able to get accurate alignment is it necessary or worthwhile? Regards.