Flipper rest need advice

[2Blade]

I put a flipper on my Kempf do I have to change my nock height and should I use a center shot gauge to check everything? Should this help me to be more accurate?

[NDTerminator]

If you were shooting off the shelf before then yes, you're nock point height will have to be re-set.

Using a bow square on the rest, I start at +3/8" and shoot & adjust from there. I shoot three under and find that all of my recurves like a nock point height of +3/8" to +4/8".

Generally speaking, you can expect better arrow flight with an elevated rest.  Whether or not it's more accurate is up to you...

[2Blade]

ttt

[Bird Dog]

I would set it for centershot to start and adjust it from there.