I am really sorry about Stevie, Guy. I know you have tried your best.

I agree that you MUST get your temps straightened out. They really can't digest well without proper basking temps, and dehydrate and become impacted without a cool down area.

I also agree that a fecal is definitely warranted.

Do you keep your collareds on sand? If so, please consider taking them OFF of it ASAP at least until the digestion issues are resolved.