I have a 2016 ex300 and the valves seized up on me after a long ride through the hills. Long story short I changed the cylinder head which came with valves, shims and buckets pre-installed so i pretty much just bolted it on. Pistons looked fine from what I could see but I'm by no means a professional mechanic (just a guy in his garage with a wrench). After everything was put back together i turned the key to "on" and it made a weird clicking noise for about 15-20 seconds. It's never done that before. I changed the starter hoping that would fix it, it didn't. Now I'm realizing the noise is coming from the throttle actuator. I just want to know if I'm on the right path or if I missed something because like I said I'm not a professional nor do I have any specialty tools or non of that. And I'm on a very tight budget (hence why I'm trying to fix it myself). Any help at all would be greatly appreciated. Please and thank you.