XS BD sights LC9s

Bought a set and sent to Galloway for install. Nice set, but seems high. I need to fire it a few more times to see where it hits. My Shield has them on it and hit hits where I want it. I called XS and for $30 more , they will send me either a taller/shorter rear. Wish they would just replace the new rear for free-good CS? Anyone have same problem? Thank you

Follow up on XS sights:

Could never get used to them on the LC9s. Shot 2" to the right at 5/10/15 yds Contacted Galloway and worked a deal to keep my XS BD sights for them replacing them with FTO sights I sent them Big difference, much better. My XS BD sights work great on my Shield/LCR.