Polaris gurus assistance please!

Hello Atv comunity. I am a newbie, not just to this sight, but to the Atv world. I just purchased my first quad last weekend. 05 magnum 330 awd. Great looking quad hasn’t been beat on too much. Its lived a farm life. I bought this non running for I think a good price knowing I had to monkey with it and add a few $ to it. I always try to fix my cars with the internets help I usually figure things out. So I wasn’t to scared of this.
I researched the discribe problems prior to purchase. My conclusion was it needs the thermister, (been removed) and probably an ecm if that doesn’t do the trick. Turn the key on and it just flashes hot. It starts well and Idless well, but cuts out and dies when throttling up. I see the boot from the carb to air tank is not on very well. So from what I read about these I am assuming/crossing my fingers that this may be the issue. I am curios though, I was told this had a lower end rebuild (not that I can truly trust that, no paperwork to prove) it does have a clanking sound as if metal were being slapped or somthing is this normal or a bad sighn?

Ok guys so here is my real question. My thermister part# 1010934 is discontinued, I have searched on line all week and at this point am frustrated and brain dead. Is there any other thermisters that would/ could work. I don’t feel like dropping a hundred bucks on a maybe from my dealer who won’t return electrical.

Final thoughts I am both extremely excited over this quad and extremely discontented with Polaris at the same time. I grew up looking at the Honda 3 wheeless and in the past few years polaris has made a name for itself. I am bothered that an 05 would be impossible to get parts for considering how many different units use the same part. Dealer said after 7 to 10 yeas they quit making them. Well my 2 cents thinks it’s criminal if they have sold out of parts they obviously need them because they had issues. When I purchased this I never considered a 12 year old machine to be obselete and didn’t forsee the issue. Polaris as well as all the atv makers need to realize. They have a whole line of customers those who can afford new, and those who can only afford projects like me. Leaves a bad taste in my mouth and I am very surprised I don’t hear much uproar about it.

Well I got kinda long winded, thanks for reading if you are still. Lol

And an even bigger thank you to those who reply. Have a great ride.