diff --git a/chain-spec-generator/src/common.rs b/chain-spec-generator/src/common.rs
index 18f88f4..0a758d7 100644
--- a/chain-spec-generator/src/common.rs
+++ b/chain-spec-generator/src/common.rs
@@ -16,10 +16,10 @@
 // along with Polkadot.  If not, see <http://www.gnu.org/licenses/>.
 
 use crate::{
-	relay_chain_specs::{PaseoChainSpec},
+	relay_chain_specs::PaseoChainSpec,
 	system_parachains_specs::{
-		AssetHubPaseoChainSpec,
-		BridgeHubPaseoChainSpec,CoretimePaseoChainSpec,PeoplePaseoChainSpec,
+		AssetHubPaseoChainSpec, BridgeHubPaseoChainSpec, CoretimePaseoChainSpec,
+		PeoplePaseoChainSpec,
 	},
 	ChainSpec,
 };
@@ -36,16 +36,21 @@ pub fn from_json_file(filepath: &str, supported: String) -> Result<Box<dyn Chain
 	let chain_spec: EmptyChainSpecWithId = serde_json::from_reader(reader)
 		.expect("Failed to read 'json' file with ChainSpec configuration");
 	match &chain_spec.id {
-		x if x.eq("paseo") | x.eq("paseo-local") | x.eq("paseo-dev") =>
-			Ok(Box::new(PaseoChainSpec::from_json_file(path)?)),
-		x if x.starts_with("asset-hub-paseo") =>
-			Ok(Box::new(AssetHubPaseoChainSpec::from_json_file(path)?)),
-		x if x.starts_with("paseo-bridge-hub") =>
-			Ok(Box::new(BridgeHubPaseoChainSpec::from_json_file(path)?)),
-		x if x.starts_with("paseo-coretime") =>
-			Ok(Box::new(CoretimePaseoChainSpec::from_json_file(path)?)),
-		x if x.starts_with("paseo-people") =>
-			Ok(Box::new(PeoplePaseoChainSpec::from_json_file(path)?)),
+		x if x.eq("paseo") | x.eq("paseo-local") | x.eq("paseo-dev") => {
+			Ok(Box::new(PaseoChainSpec::from_json_file(path)?))
+		},
+		x if x.starts_with("asset-hub-paseo") => {
+			Ok(Box::new(AssetHubPaseoChainSpec::from_json_file(path)?))
+		},
+		x if x.starts_with("paseo-bridge-hub") => {
+			Ok(Box::new(BridgeHubPaseoChainSpec::from_json_file(path)?))
+		},
+		x if x.starts_with("paseo-coretime") => {
+			Ok(Box::new(CoretimePaseoChainSpec::from_json_file(path)?))
+		},
+		x if x.starts_with("paseo-people") => {
+			Ok(Box::new(PeoplePaseoChainSpec::from_json_file(path)?))
+		},
 		_ => Err(format!("Unknown chain 'id' in json file. Only supported: {supported}'")),
 	}
 }
diff --git a/chain-spec-generator/src/main.rs b/chain-spec-generator/src/main.rs
index c8d7b38..2b226d2 100644
--- a/chain-spec-generator/src/main.rs
+++ b/chain-spec-generator/src/main.rs
@@ -56,7 +56,8 @@ fn main() -> Result<(), String> {
 			),
 			(
 				"coretime-paseo-local",
-				Box::new(|| system_parachains_specs::coretime_paseo_local_testnet_config()) as Box<_>,
+				Box::new(|| system_parachains_specs::coretime_paseo_local_testnet_config())
+					as Box<_>,
 			),
 			(
 				"coretime-paseo-tot",
diff --git a/relay/paseo/src/genesis_config_presets.rs b/relay/paseo/src/genesis_config_presets.rs
index 5335d07..5002827 100644
--- a/relay/paseo/src/genesis_config_presets.rs
+++ b/relay/paseo/src/genesis_config_presets.rs
@@ -104,16 +104,16 @@ fn default_parachains_host_configuration() -> HostConfiguration<polkadot_primiti
 		max_head_data_size: 32 * 1024,
 		max_upward_queue_count: 174172,
 		max_upward_queue_size: 1024 * 1024,
-		max_downward_message_size: 1024 * 1024,
-		max_upward_message_size: 50 * 1024,
+		max_downward_message_size: 51_200,
+		max_upward_message_size: 65_531,
 		max_upward_message_num_per_candidate: 16,
 		hrmp_sender_deposit: 0,
 		hrmp_recipient_deposit: 0,
 		hrmp_channel_max_capacity: 1000,
 		hrmp_channel_max_total_size: 100 * 1024,
-		hrmp_max_parachain_inbound_channels: 10,
+		hrmp_max_parachain_inbound_channels: 30,
 		hrmp_channel_max_message_size: 1024 * 1024,
-		hrmp_max_parachain_outbound_channels: 10,
+		hrmp_max_parachain_outbound_channels: 30,
 		hrmp_max_message_num_per_candidate: 10,
 		dispute_period: 6,
 		no_show_slots: 2,
@@ -204,6 +204,9 @@ fn paseo_testnet_genesis(
 		"configuration": {
 			"config": default_parachains_host_configuration(),
 		},
+		"hrmp": {
+			"preopenHrmpChannels": Vec::<(u32,u32,u32,u32)>::new(),
+		}
 	})
 }