Failing status checks pretty often

Good afternoon from Greece,

After upgrading to `mev-boost v1.9`, I'm getting errors when calling `registerValidator` pretty often, probably due to the `-check-relay` flag:

```
INFO[2025-05-02T21:37:11.017+03:00] calling registerValidator on relays method=registerValidator numRelays=2 regBytes=1327 timeout=3s ua=Lighthouse/v7.0.1-e42406d version=1.9
INFO[2025-05-02T21:37:11.258+03:00] http: POST /eth/v1/builder/validators 200 duration=0.240510 method=POST path=/eth/v1/builder/validators status=200 version=1.9
WARN[2025-05-02T21:37:14.019+03:00] error calling registerValidator on relay error="Post \"https://boost-relay.flashbots.net/eth/v1/builder/validators\": context deadline exceeded (Client.Timeout exceeded while awaiting headers)" method=registerValidator ua=Lighthouse/v7.0.1-e42406d url="https://boost-relay.flashbots.net/eth/v1/builder/validators" version=1.9
```

If I'm reading this correctly, `registerValidator` is returning 200 so at least it's... succeeding? Partly? Sorry, I'm a bit of a noob.
**I'm using 2 relays:**
```
-relay
https://0xac6e77dfe25ecd6110b8e780608cce0dab71fdd5ebea22a16c0205200f2f8e2e3ad3b71d3499c54ad14d6c21b41a37ae@boost-relay.flashbots.net
-relay
https://0xa1559ace749633b997cb3fdacffb890aeebdb0f5a3b6aaa7eeeaf1a38af0a8fe88b9e4b1f61f236d2e64d95733327a62@relay.ultrasound.money
```

I don't think this was happening before the upgrade. Sometimes `registerValidator` will POST without issue but 80% of the time, it returns this error.

By the way, when I send a `GET` request to the builder asking for `/eth/v1/builder/status`, I just get a `200` everytime, which according to the API spec, is supposed to indicate A-OK?