So my back has been running rough and Seafoam would fix it but only temporarily so I finally decided to pull the carbs and clean them properly. I haven't gotten to that job yet, but in the process of taking apart the cooling system (required to get the carbs) I flushed the cooling system and a bunch of rest came out (not unexpected, happened last coolant flush), but then I take the thermostat housing out and realized the source of the rust.
The end connectors of the housing were rusted away, to the point where half of a connector would be missing! Clearly I need to replace the part. The same rusting away I found had happened on the top of the two metal pieces feeding in to the engine (and maybe the filler cap, I haven't taken the house off of there.)
So basically I need to replace all of the cooling system (probably not the radiator, I don't have a ton of cash laying around :X).
1) What is a good store/website to order the components off? I need to replace the thermostat and the metal engine pieces. I also want to replace the hoses and radiator cap.
2) What is a good way to clear as much of the gunk out of the engine as I can? Ripping the engine out and apart is beyond what I'm experienced with or want to do. Also, what can I do to clean the radiator out as much as possible?
3) Is this a common problem? What can I do to try to prevent a recurrence?
I have had some mysterious (very slow) coolant leak since I got the bike but never could find it leaking anywhere, nor was the bike smoking. Hopefully the replacement parts will fix that
Thanks for the advice guys. I feel like there was some other stuff I wanted to ask to, but at least this should be a good start!
EDIT: Added picture of why I needed to replace stuff! The pic is the thermostat, but the pipes going to the engine are the same way.