Arrma 3s Big Rock Servo replacement

[Stewart.R.C.Concepts]

So I'm wanting to change out my stock spectrum 23t servo. With a 25t servo does anyone know if it requires a special servo saver or will any one work within reason. I already have several servos but I didn't realize that the stock was 23t not 25t like most other servos. I've seen Hot Racing makes one with exchangeable splines I comes with the servo saver along with a 23t, 24t, and 25t spline adapters but it's almost $30 where as a normal 25t servo saver is less than $10. I hope you guys have the answers???

 

[9x19]

Arrma makes a 25T servo saver too, part number ARA340215

https://www.ebay.com/itm/335148840723?chn=ps&mkevt=1&mkcid=28