diff --git a/src/packet/messages.rs b/src/packet/messages.rs
index 062af3c..529a825 100644
--- a/src/packet/messages.rs
+++ b/src/packet/messages.rs
@@ -329,18 +329,18 @@ pub struct ComboStepDone {
 }
 
 #[pso_message(0x47)]
-pub struct PlayerTechCast {
+pub struct PlayerTechCast { // this packet and packet 0x8D (PlayerTechStart) are both sent at the same time as soon as the player presses a tech button, regardless if the tech is ACTUALLY casted (it not cancelled due to player blocking) or not.
     technique: u8,
     unknown1: u8,
-    unknown2: u8,
+    tech_level: u8,
     num_of_targets: u8,
 }
 
 #[pso_message(0x48)]
-pub struct PlayerTechDone {
+pub struct PlayerTechDone { // this packet gets sent once the tech is actually casted (ie: barta actually shoots out from your feet)
     technique: u8,
     unknown1: u8,
-    level: u8,
+    tech_level: u8, // tech level in packets is 0-based
     unknown2: u8,
 }
 
@@ -561,6 +561,11 @@ pub struct KillMonster {
 
 //}
 
+//#[pso_message(0x80)]
+//pub struct PlayerTrapActivate {
+
+//}
+
 #[pso_message(0x83)]
 pub struct PlayerTrapSet {
     trap_type: u16,
@@ -572,11 +577,6 @@ pub struct PlayerTrapSet {
 
 //}
 
-//#[pso_message(0x80)]
-//pub struct PlayerTrapActivate {
-
-//}
-
 //#[pso_message(0x87)]
 //pub struct PlayerShrink {
 
@@ -597,10 +597,10 @@ pub struct PlayerKilledByMonster {
 
 //}
 
-//#[pso_message(0x8D)]
-//pub struct PlayerTechStart {
-
-//}
+#[pso_message(0x8D)]
+pub struct PlayerTechStart { // this packet and packet 0x47 (PlayerTechCast) are both sent at the same time (PlayerTechStart then PlayerTechCast) as soon as the player presses a tech button, regardless if the tech is ACTUALLY casted (it not cancelled due to player blocking) or not.
+    data: [u8; 4], // always 0'd?
+}
 
 #[pso_message(0x94)]
 pub struct PlayerWarped2 {
@@ -1047,7 +1047,7 @@ pub enum GameMessage {
     //PlayerUnshrink(PlayerUnshrink),
     PlayerKilledByMonster(PlayerKilledByMonster),
     //CmodeStatistics(CmodeStatistics),
-    //PlayerTechStart(PlayerTechStart),
+    PlayerTechStart(PlayerTechStart),
     PlayerWarped2(PlayerWarped2),
     //CmodeTryAgain(CmodeTryAgain),
     ModifyPlayerStats(ModifyPlayerStats),
@@ -1212,7 +1212,7 @@ impl PSOPacketData for GameMessage {
             //PlayerUnshrink::CMD => Ok(GameMessage::PlayerUnshrink(PlayerUnshrink::from_bytes(&mut cur)?)),
             PlayerKilledByMonster::CMD => Ok(GameMessage::PlayerKilledByMonster(PlayerKilledByMonster::from_bytes(&mut cur)?)),
             //CmodeStatistics::CMD => Ok(GameMessage::CmodeStatistics(CmodeStatistics::from_bytes(&mut cur)?)),
-            //PlayerTechStart::CMD => Ok(GameMessage::PlayerTechStart(PlayerTechStart::from_bytes(&mut cur)?)),
+            PlayerTechStart::CMD => Ok(GameMessage::PlayerTechStart(PlayerTechStart::from_bytes(&mut cur)?)),
             PlayerWarped2::CMD => Ok(GameMessage::PlayerWarped2(PlayerWarped2::from_bytes(&mut cur)?)),
             //CmodeTryAgain::CMD => Ok(GameMessage::CmodeTryAgain(CmodeTryAgain::from_bytes(&mut cur)?)),
             ModifyPlayerStats::CMD => Ok(GameMessage::ModifyPlayerStats(ModifyPlayerStats::from_bytes(&mut cur)?)),
@@ -1379,7 +1379,7 @@ impl PSOPacketData for GameMessage {
             //GameMessage::PlayerUnshrink(data) => data.as_bytes(),
             GameMessage::PlayerKilledByMonster(data) => data.as_bytes(),
             //GameMessage::CmodeStatistics(data) => data.as_bytes(),
-            //GameMessage::PlayerTechStart(data) => data.as_bytes(),
+            GameMessage::PlayerTechStart(data) => data.as_bytes(),
             GameMessage::PlayerWarped2(data) => data.as_bytes(),
             //GameMessage::CmodeTryAgain(data) => data.as_bytes(),
             GameMessage::ModifyPlayerStats(data) => data.as_bytes(),